2 Techniques taught to me 1. Face to face, both hands grab his hair, step back and ' swing ' his face into the ground. 2. Grab long hair / pony hair and ' strangle ' the guy with his own hair. I saw a mental guy try this on a carer, he was very fast and had been planning the attack. Check out Greg Jones San Soo Kung Fu ' Predator Training ' book. A technique of sliding the hand into the hair, close to the skull as possable then make a fist. Very painful. Excellent control method.