My sensei teaches a slightly different version of yonko than the one I keep seeing described here. He learned it from Tri Thong Dang sensei. Instead of going for the nerve on the inside of the forearm he puts his index or middle finger and thumb between the knobby wrist bones and the hand. He then does a scissoring type action with his finger and thumb. Hard to find but hurts like.... like....like something that hurts a LOT
Anybody else do this one? I was shown the one that I usually see described here and personally like it better so that's the one I use (when I try for the pain...which isn't really that often anymore).