i keep it cocked because i have a bad tendency for my wrist to turn in my backswing, its a checkpoint for me, may not work for other people, but a must for me to be sure i dont turn over the ball. long free armswing, cocked wrist, and just keep your arm long, its where revs are generated, combined with a good knee bend and timing.
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am i still considered a lefty, i never get to play the left side of the lane