I think breakpoint is probably the most important thing on a sport shot. It doesn't matter what you do, as long as you get to the breakpoint with your speed and revs correct, you'll hit the pocket. It's just that with a sport shot, that's kinda hard to do every time. Because you have to be accurate to a board or two at the release, you might have 3 boards at the arrows, but the breakpoint is pretty narrow most of the time, and especially to get carry. You might have 3 or 4 boards at the breakpoint that will hit the pocket, but right a board could leave you a 10, left a board could leave you a 4 or a 4-9. The most consistency can be found inside, usually. It's so wet/dry outside that the slightest miss in angle at the release will either take it brooklyn or slide it right past everything off your hand. Playing inside allows the angle to help push the ball through the dry inside, and the usually dry backends help bring it back. Forward roll is a good thing, if you can utilize it. I'd suggest getting a weak ball, and staying within 10 boards from release to breakpoint. Lay it down at maybe 23, cross 4th arrow, out to 13, and you will hit the pocket everytime. Or, if you can control forward roll better, all it takes is moving deep and feeding it right. The dry inside will feed the ball to the pocket with forward roll. I played that way at a tournament in Warrensburg, MO. It was really dry inside, so I took a weaker ball, came full up the back of it, my angle of rotation was about 15 degrees or less. Left a few 10's, but I got to the pocket nearly every single time, and that gave me the lead through qualifying and all the way through match play, I only ended up getting second by 15 pins (the guy that bowled me bowled an awesome game against me in the positioning round, he earned it). Too much side roll makes it squirty, either you'll slide right through your breakpoint, or it'll shoot left too early. Speed is also very important, that needs to stay constant. That's also another reason to play inside, if you can't get the speed you need with the revs you need, back off on the revs (lol, JeffREVS) a little, because most of the time there will be enough dry to help the ball out. On oilier patterns though, you might be able to play your comfort zone, but speed control and breakpoint will still be the two most important things.
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Forget Kung Fu, I know Ron Bahr!!!
The only difference between youth and adult leagues are that the big boys are allowed to whine. They're more entertaining anyway.