Jeff, there are many points that are vulnerable on the body. But, if your weapons are not well trained, you can know those and a thousand more which will not serve you. I prefe to train the weapons of which to inflict damage, and strike where I can. Too many people forget the kicking and punching training because it takes a lot of work and sweat. Now, I am not saying this about Joe, it is just a general statement I've noticed about many other schools. There are many karate ka who train very hard, they usually will find those spots very quickly.
Manny Salazar
Submisson Sabaki