Balance, balance, balance. My arch nemesis has always been the old falling off at the line.
Plus, I've done some complete revamps in my game in the past month. Slower ball speed, a few more revs, and better timing are all on my mind. So, I really concentrate on my foot work (slow and even, 5 steps), my backswing (went from almost nothing to about shoulder height), and my hand position (a little more under the ball). It's been a bit of a change, but it's fixed a lot in my game. I'm much more consistant with hitting my mark, as well as the ball is much more predictable.
My mechanical keys:
BALANCE BALANCE BALANCE
Follow through the mark...get that hand up there.
Keep those feet slow.
Keep the shoulders constant (I open a bit in my backswing, but that's due to a lack of flexibility in my shoulder area - it was the reason my old backswing never went above about my waist.)
Make sure the hand is pounding through the ball, not pushing it at release.
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Lightning strikes at the oddest times...
My high game? Two 300's...within two weeks of each other.
"For the money, for the glory, for the fun. Mostly for the money."
-Smokey and the Bandit