You don't use different thumb pitch just to get revs. You do it only if you are dropping the ball, or if it's hanging or whatever. We truthfully can't tell you how forward pitch would work out with you, over the internet. If you aren't having problems releasing the ball, you don't need to do it. Just cup your wrist if you really want revs, but keep in mind that not everyone is physically able to put lots of revs on the ball.
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- Andy