I'm sorry coach, but I can't disagree more with this. The earlier a player learns to play M2M, the better. The zone is an easy to put in defense that is only successful because many kids at this age can't hit the outside shot. The hardest thing to do is teach a kid that has never played anything but zone how to play help M2M. A kid that can play good M2M can learn most zones very quickly and easily. Besides, I think M2M is more fun anyway.