If that was in reference to my post, I said you shouldn't hit the horse when he bucks in a forceful manner. Tapping the horse to ask him forward if he stops and looks around is much different
When he nips at your clothes back him up. But DON'T MOVE YOUR FEET. In the herd, the one who moves their feet first loses the game. So swing your lead rope back and forth strongly when he nips at you.