If he can't grip you, then he can't control you: It's often a good idea to focus on controlling your opponents hands and whenever you feel they are controlling you with grip. Some opponents just once they put hands on you they can dominate. Don't give them the luxury of putting on you. Control their hands or get your hands and elbows inside their arms and you will severely limit their ability to use their superior strength through grips upon your body. You don't want to play this exclusively as it can degenerate into a negative game where you focus too much on interfering with what the other fellow is doing rather than focusing primarily on what you want to do, but used for short of time and/or specific opponents it can be a big help when fighting bigger and stronger opponents