Follow hockey's lead and use "enforcers" to retaliate. You hit a marquee player in hockey and you can expect a fight coming you way. Defensive players don't mind taking a cheap shot since they are on the giving end of violent hits. Just think if someone takes a shot at your QB, one of your offensive lineman can throw down the helmet (the equivalent to dropping the gloves as a signal to fight) and trading blows with a defensive lineman. If some of these defensive players knew some pain was coming their way they would think twice about a cheap shot. Third man in would be ejected. The ones who are complaining the most about the rules pritecting the QB are the guys on defense, who aren't in a position to be hit that much. Before you all burn me for suggesting this, I am only kidding. It will never happen and wouldn't really work. But I bet a lot of you were thinking how cool it would be to see Logan Mankins or Sebastian Vollmer put a beatdown on Terrell Suggs or Ray Lewis.