Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263451AbTFYBv2 (ORCPT ); Tue, 24 Jun 2003 21:51:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263459AbTFYBv2 (ORCPT ); Tue, 24 Jun 2003 21:51:28 -0400 Received: from 205-158-62-67.outblaze.com ([205.158.62.67]:58850 "EHLO spf13.us4.outblaze.com") by vger.kernel.org with ESMTP id S263451AbTFYBvU (ORCPT ); Tue, 24 Jun 2003 21:51:20 -0400 Message-ID: <20030625020452.6000.qmail@email.com> Content-Type: text/plain; charset="iso-8859-1" Content-Disposition: inline Content-Transfer-Encoding: 7bit MIME-Version: 1.0 X-Mailer: MIME-tools 5.41 (Entity 5.404) From: "Clayton Weaver" To: linux-kernel@vger.kernel.org Date: Tue, 24 Jun 2003 21:04:52 -0500 Subject: Re: bkbits.net is down [OT, long: golf howto] X-Originating-Ip: 172.196.164.134 X-Originating-Server: ws3-5.us4.outblaze.com Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 15388 Lines: 376 I'm not in the Bay Area, you can probably get a talented sysadmin from down there that already has a house to pay for, but this part is a piece of cake: > I still need to learn how to play golf > so I could use some help, right? Linux Golf Howto: Unlike a baseball swing, where you do a lot of work with your right wrist if you are right-handed and vice-versa if lefty, the muscle is mostly exerted on your off-hand side. If you are right handed, your left shoulder, hip, and thigh do most of the work. I will explain it right-handed (and just reverse everything if left-handed). A common failing is for a right-hander to drop the right shoulder and let his/her right hand/wrist take over to snap the clubhead through the ball. This leads to the "slice of death" by opening up the clubface as it gets to the ball (clubface no longer perpendicular to tangent to arc of swing that points toward hole, and the ball takes a big wide turn to the right in mid-flight). If you seriously want to learn, my suggestion is to learn to play one-handed first, with your left side. After that, adding the other hand for control is easy, and you haven't picked up any bad habits that rely on the strength of your right hand and wrist (golf is not baseball). When you take the club back, you do it with your left side, keeping your wrist and arm in line (don't drop your hands), using the muscles in your left shoulder and along you left side. Your left arm and wrist muscles merely hold the club in the desired plane and keep it from wiggling around, with your wrist gradually cocking as you get to the top of the backswing. Let your left heel come up off the ground as you swing back. To start the forward swing, pull your left heel down to the ground. This starts the club around and down, and it allows your left hip to move out of the way (prevents "blocking out", which pushes the arc of the club off to the right from where you intended, in golf jargon "a push"). Imagine the swing: take the lid of a coffee can and tip it up on edge, so that it is inclined at about 60 degrees from horizontal. Look at the edge of it. Your clubhead should follow a path similar to that described by the edge of the coffee can lid. Your arm and club should stay in the plane described by the surface of the coffee can lid both when taking the club back and bringing it forward. To learn one handed first, you need to build up muscle on your left side. I suggest two things for that: one is a piece of broom handle with 4-5 feet of rope tied to it with a timber hitch or similar (so the knot does not rotate when you turn the handle) and a weight on the other end (small weight from a weight set or similar, maybe 5 pounds/2-3 kilos). Hold the handle out at arms length, with your wrists on top, and wind up the rope by rotating your wrists forward, lifting the weight. When it gets to the top, unwind the rope, again with wrist rotations, and let it back down again. Try it again. You will soon find out how many times you can do it without your forearm muscles tying themselves in knots. Do this every other day for a few months (off-day speeds muscle growth), then every day, just to keep in shape. (I mean, how long does that take, anyway? It's not as if it's an imposition on your time. You could do it while staring at a monitor.) This builds up wrist strength tremendously. (I remember suddenly finding a 16-lb bowling ball easy to handle after doing this for a couple of weeks many years ago, where before I needed a light ball to have any control when I released it.) It should allow you to hold the club one-handed with your left hand at the top of your back swing without the weight of the club overpowering your wrist. The second exercise is designed to build up your whole left side, and is easier if you have some equipment. The best thing for it is one of those ropes with the tension fitting on it and two handles, where you turn the cylinder to dial up the tension (resistance to pulling the rope through the cylinder). You set it so that you can slowly, with much effort, pull the rope through the cylinder. Attach it to something down low, at floor or ground level. Pull it out so that you can stand with your left hand in front of you, right where it would be if you were holding a golf club, with the cylinder to your left. With your left hand, pull the rope to your right and up, until your arm is level with your shoulders. Let your right shoulder rotate back a bit as your left arm comes up, so that it is out of the way. Lean forward slightly as you do it, just as if you were about to swing a golf club, with your knees just slightly flexed, so that your weight is on the balls of your feet and your legs are not rigid. Keep your head still. Don't move it to the left or right or forward or backward as you strain to pull the rope through the cylinder. This is key, moving your head inappropriately is one of those all too common duffer failings (like letting your strong side take over the swing). Don't move your hips left, right, forward, or back either. You are coiling a spring, not doing the mambo. You are rotating around an imaginary rod that is stuck in the top of your head and comes out your butt, fixed to something immovable at both ends (not rigidly true, but approximately true), your clubhead is following the same arc, and your arm and club travelling in the same plane every swing. When you get the handle at the end of the rope all the way to the top, go grab the one at the other end of the rope, and do it again. I don't really have a hard and fast recommendation for how many times to repeat this. Different people start from different initial states of conditioning, and their muscles get tired at different rates. Do the same every other day routine for a few weeks, then switch to every day. If you can do it several times before tiring, so much the better (you might notch up the cylinder tension a little, cheating with too light of a load wastes your own time). If the rope pull equipment is inconvenient to obtain or install, something elastic may do instead, a bicycle inner tube hooked around a car bumper for example. You want it to have enough stretch so that you can go through the whole range of motion from hand at rest in front of you to where it would be at the top of your backswing, so you learn the habit of rotating in place as you swing while doing the exercise. (This is one weakness of isometrics in this context, which build up muscle with no equipment other than something immovable to push/pull against, but do not build up whole-body muscle memory for the motion of a proper golf swing). Most people have enough muscle already for a proper downswing in their back or legs, but you can work on that the same way, merely putting the anchor of the exercise device above and somewhat behind you to the right instead of below you to the left. Consider this part optional. You can try out your new muscles on a driving range with a bucket of balls occasionally (cheaper than experimenting on a real golf course). When you get to the point where you can take the club back with your off hand, hold it steady at the top of the back swing, and bring it back through the proper plane with just that one hand, hitting the ball respectably squarely both off of a tee and off of a mat or grass, you are ready to let your other hand ride along for extra control at the bottom of the swing and learn some fine points. (Fake turf mats at driving ranges are unnaturally bouncy when you hit them with an iron, but they are good for learning to play on dried-up, arid country hardpan, where taking a normal divot when you swing can produce unexpected results). A couple of general points: keep everything square. The tips of your toes, your knees, and your shoulders should be parallel to the direction that you intend the ball to go when you setup for your swing. Some people vary these, but you certainly aren't experienced enough yet to know whether that is a good idea given your personal physique. And when you change one bit of setup alignment, what else needs to change at the same time to accomodate it without throwing the clubhead offline? The possibilities are endless, so let's not explore any of them unnecessarily. Keep the back of your left hand and the club face perpendicular to the direction that you intend the ball to go. Fancy controlled hooks and fades are for pros and experienced amateurs who know what they are doing. As a beginner, you want the Byron Nelson swing: "hit it through a pipe, straight as a string, don't sweat the distance." Sand: hit the sand hard about 1/4-inch behind the ball. And I do mean *hard*, wimpy swings in sandtraps are doom. If the hole is real close, hit the sand a little farther behind the ball. If the hole is a long way off, hit the sand closer to the ball. (Exception: gritty sand with flat grains, like sand from volcanic rock, or wet sand, hit it right where the ball meets the sand, use less strength.) You need a heavy club for sand. Lots of times the ball is buried halfway down into it, and you have to get under it to get it out. A heavy sand wedge lets you hit behind the ball without losing too much force in the sand. Nearly always: swing easy, let the clubhead do the work. You gain hardly any clubhead velocity by trying to drive the ball into the next state, but it's easy to lose the correct plane of your swing, attitude of the clubhead at the bottom of the swing, and so on that way. As an engineer, you should know that the velocity and weight of the clubhead do the work, not how hard you exerted yourself. (Ever watch Barry Bonds swing a baseball bat? He doesn't swing hard. It's all timing and coordination. Golf is the same way.) Hint: if the clubhead is dropping below the level of your own head on the backswing, your swing is too long and your are probably swinging too hard. Have a friend watch and see. Once you get around to using both hands, let them work together at the bottom of the swing, where the club meets the ball. Your left hand is dominant up until that point, but as the club comes through the ball, you want to feel as if both hands have the same amount of tension, as if both are exerting the same amount of grip on the club. If you feel the exertion in your right wrist and forearm as you hit the ball, you've fallen off the wagon and need to go back to left-handed golf until you relearn how to swing correctly. At the bottom of your swing, your left wrist has already done the work of starting the uncocking of your wrists (that were cocked at the top of your backswing), from then on you are just holding on with both hands as the club rotates around until it is lined up with your left arm again, which should be right as the clubhead gets to the ball. Putting: arm putting (rigid wrists) is considered more consistent for more people, but some people have really sensitive hands and wrists, and they do better wrist putting, where they cock and uncock their wrists when putting, and the putts recreate that tiny arc of their normal golf swing where the club meets the ball, only sweeping the ball off the carpet instead of driving into the grass underneath it. I find it good to keep my head right over top of the ball, so the line that I want to putt along seems to stretch off directly to my left and right from the ball. (Putting is an art as much as a science, to each his own.) Technique and smooth, relaxed application of force are almost everything in golf, but good clubs do make it easier. An old beater set that are all the same weight and shaft stiffness is better than a mix and match set, modulo wedges and putters (which people have personal tastes for). Beware old woods with wooden heads: they absorb water vapor, get heavy, and become a chore to get through the point of impact lined up properly. (Can probably be dried out one way or another.) Too stiff is better than too flexible for club shafts. Too stiff costs a little distance if you aren't a hard swinger, too flexible makes it harder to keep the clubhead in the right place at the bottom of the swing (small differences in how hard you swing translate into big differences in alignment when the club meets the ball with a too-flexible club shaft). Good grips are worth a lot. With worn-out, slippery grips, one tends to hold the club too tight. That interferes with achieving a relaxed, consistent, poweful swing. For a putter, I always liked a grip that was not so much fat as "deep", that extended back into the palm of my hand a ways from the centerline of the clubshaft. Kind of hard to find, and of course you have to like the head of the putter even if you do find one, but that always gave me a better grip on the putter and more control when putting. Balls, there are probably a dozen or more good brands these days. Beginners should use golf balls with "no cut" covers. (You are going to hit the middle of the ball a lot of times instead of where it meets the turf. A no-cut ball will save you a lot of money.) You can always use used balls that somebody fished out of a pond and sold back to the pro shop. Then you take what you get, but you don't regret it quite as much when you hit it back into the same pond yourself. It's often more fun if you don't keep score, just play the course. Every shot is a challenge of its own, as is every hole. I mean, are you here to count how many strokes it took you to get around or merely to see how well you can hit them while getting some exercise? (Nice 5k yard stroll, good for the heart.) (For the fee-challenged: you can make your own golf course anywhere. All you need is a trail or a dirt road leading somewhere without a lot of houses around it. Walk along it and designate holes, not too far apart, dig a little hole with a stick or something. Get some beat up 7-irons and a pocket full of old, used golf-balls. Take one 2-iron or similar along for "putts". The "fairway" is the road or trail, and your task is to bounce your ball along through there without losing it in the woods. The "green" is just a patch of bare dirt or moss or something where you dug the hole. Watch out for rattlesnakes, dead rats, etc. Do this enough and you will become a wizard at getting from the rough back onto the fairway on a real golf course.) Ob. lkml: I got a week out of Bouton's SIS5513 patch to 2.4.21 and a couple of days out of Pavlik's with no trouble so far (SiS530), running with dma enabled, lightly loaded doing mundane file server work with an occasional local build. I haven't tried anything previously "exciting", like calling "sync" while building perl and doing a backup at the same time or scouring one hd with 32 threads in parallel. But at least those patches aren't obviously broken in any way that I can see so for. Regards, Clayton Weaver -- __________________________________________________________ Sign-up for your own FREE Personalized E-mail at Mail.com http://www.mail.com/?sr=signup CareerBuilder.com has over 400,000 jobs. Be smarter about your job search http://corp.mail.com/careers - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/