I agree on most of what you said but lifting weights at this age isn't really the answer. Should the kids do push ups and stuff like that,sure. The kids are still growing into their bodies. When they get to 16 is a good time for them to start. You don't have to be really strong to play lax but you do need to be able to have the stamina to run. Quick feet,good hands and the ability to take some punishment. It's not like football. The kids will get bigger and faster as they grow. The good thing is that you don't have to be big to be successful in lax. Just be honest with yourself and with your son and it will make life alot easier. Not saying that he won't get to that point but for now have him on a team where he is able to play and learn the game even more so cause you son will turn heads later on as he matures. Being on a good team and not playing as much isn't a good thing either.