You might try having a chat with the coach and tell him the kid is training for competetion and that any addition weight training may hinder that ... if the coach is not a total ego maniac... I would hope he would adjust the kid's training. If he is an ego maniac and a horse's rump.... squash him ha ha Or just embarass him with facts and data versus his bro science coaching.... or squash him!!
There is no tomorrow! THERE IS NO TOMORROW! THERE IS NO TOMORROW! - Apollo Creed