Definitely double check my advice, but as far as the hook-grip for Snatches, what I have learned is that because of the wider grip the wrists cannot accommodate such an awkward bend, so the pointer finger and the middle finger should have the most solid purchase of the bar, while less emphasis is placed on gripping with the ring and pinky.
You should feel that the hook of the thumb combined with the grip of the pointer and middle fingers nearly provide enough grip themselves without the help of the ring and pinky fingers.
As far as the hook-grip on Cleans... Unfortunately, I don't really understand your meaning. Is it a popping? Is it just general discomfort?
The pressure from the bar on the side of the thumb will be uncomfortable for a while, but anything beyond that should probably be corrected before it becomes a habit and an injury.
My Training Journal
5' 8" Current BW 207 (94) lbs (kg)
20 JAN 12 at 200 (90) BW
- 385/275/405 (175/125/184) SQ/B/D
29 MAY 12 at 206 (93) BW
- 135/175 (61/79) SN/CJ
Last edited by tank; 04-13-2012 at 02:45 PM.