During training I have no problem in training or even competing against larger or stronger opponents. The problem is at the end of class when you roll and you do 5 minute rounds how do you effectively use Jiu Jitsu Technique when the larger stronger opponent is constantly using muscle to hold you down and not use much technique, most of the larger guys I train with are excellent at using technique and actually not muscling through moves but there are a few that just want to use full on muscle for 5 minutes roll for 2 rounds and then be completely gassed and sit on the side till they leave......HOW do you combat this situation? any suggestions would be appreciated. This is the same type of guy that will hold you in closed guard for 3 minutes and not try and advance. It gets very aggravating!