Hi Rick, sounds like you're having trouble staying behind the ball at your release which is something I also struggle with. I found that I can keep my hand from rotating if I keep my armswing & elbow in close to my ribcage. You might want to check out Joe Slowinski's website. He's got some great articles he wrote for BTM magazine that discusses armswing and how to improve your rev rate. Basically, the article on increasing rev rate demonstrates how to keep your hand position behind the ball which is what some folks call playing the inside of the ball. The other articles I fold helpful were his discussion of developing your swing slot and the other one about using your balance arm. Joe's website is www.bowlingknowledge.info. Good luck & let me know if that helps.
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