Groin is tough. there's not a whole lot you can do to aide it other than taking it easy for a while. when you do get it healthy enough to play - make sure you stretch it out first and afterwards. strengthen the area with squats and reverse lunges too.
I think since they have basically removed kickoffs from being returned by moving it up 5 yards - they should make a rule that if the kickoff goes through the uprights and is a touchback - the team gets the ball on the 10 instead of the 20 yd line.