we've sort of developed a culture at my club that has helped with this. if someone seems like they might be a bully, i work them hard then my students & i beat the crap out of them during sparring. nothing new, but what's most rewarding is when the bully stays...his character actually improves. we've had a couple cocky tough-guy types really change their personality not because they were getting beat up, but because they were getting beat up by guys who were respectful & friendly.
jf
jf