Im the opposite of Greg on this, probably because I have big hands. I can get 3 fingers over my thumb on the hook if I want to... but I dont, i use 2. I stay pretty loose in the hand when pulling. Im probably not representative of Olers... besides big hands I had a pretty strong grip from pre OLing days when I did both PL and lots of grip specialization like rolling thunder holds, ironmind grippers, sledgehammer tricks, etc. so in OL grip has always been an afterthought for me.