Interesting topic
I read in one of Geoff Thompsons books that the best place to strike someone to knock them down/out is a hook or hooked cross to the chin. This is because the chin acts like a fulcrum which twists the head and bashes the brain against the skull.
Never tried it though.
'"4 ounces deflect 1000 pounds" represents a skill potential, if you stand in front of a 1000 pound charging bull and apply four ounces of deflection, well, you get the picture..' - Tai Chi Bob
"My car has a lot of parts in there that I don't know about, don't know what they're called, haven't seen them and wouldn't know what they were if someone pointed them out to me .... doesn't mean they're not in there." - Evolution Fist