Understand not I question yours?
Basically, you can uncup your wrist in tghe moment of release to create a kind of "whipping" motion behind the ball. This can be very effective (I think Mark Roth made this popular a couple of years ago?), but it needs good timing and I am sure not everyone can do it because of the hand shape.
IMHO, normally a staright wrist is enough to impart good revs onto a ball. Again, timing is the issue - the ball must clear the thumb, and then you just "go through" the ball with your fingers, letting it roll across the fingertips.
You can enhance this with curled fingers or a trin of the wrist outwards - or the wrist snap mentioned before. But I think that's a personal thing and needs trials and training to see waht works for you. Just avoid a turn of the wrist inwards on top of the ball, because this is very detrimental to a proper ball reaction.
The grade of wrist cupping will definitively change revs - and again, this is a trial thing. But IMHO, I'd try to keep the game as simple as possible and have the cupped wrist or a tucked pinky as an extra option in store if you REALLY need it, not as a standard strategy (it can also hurt you, beware!).
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DizzyFugu - Reporting from Germany
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