The NHL wants to adopt a new rule against blindside hits to the head before the end of this season, according to two reports Wednesday. The league is hoping to fast-track the proposed rule and is preparing a DVD package after a number of players suffered concussions this season. "It's a process that has never been done before in the season," NHL senior vice president of hockey operations Colin Campbell told the Globe and Mail in a story published online early Wednesday. "But this is so important an issue that if we can possibly avoid just one concussion, we should do this."