How Long?

[OKREF]

Originally Posted by scrounge

Isn't it already there with the prohibitions against butt blocking?

9.4.3 COMMENT: Face tackling, butt blocking and spearing are somewhat related fouls. All are illegal and each carries a 15-yard penalty. Butt blocking is initiating contact with front of the helmet against an opponent who is not the runner. It may be committed by either offensive or defensive players. Face tackling is the same act against the runner and can only be a defensive technique. Both fouls may result from inadvertent acts. Spearing is initiating contact against an opponent with the top of the helmet and may be committed either by offensive or defensive players. Any tactic which involves the illegal use of the helmet is condemned by all who are concerned with the well-being of players and the perpetuation of the game. (2-20-1c)

Butt Blocking deals with the front of the helmet. Doesn't say anything about the crown. How many of you have ever flagged a running back when they lower their head to take on the hit, and hit the tackler with the crown of their helmet? I have never done it.