thank you mark. if there was not such an opportunity for my son right now in hockey, you are right. i would not allow him to play again - or at least until he was an adult living on his own making his own decisions. i appreciate your concern over multiple concussions. trust me i am concerned too. one thing i will not allow is for him to go back too soon. he has to be at pre concussion levels for a good while before he steps back on the ice.