"if violations are committed, they will be called" Really? By whom??! When have you ever seen or heard a tournament and/or USAL call out a team for player ages when they are grade-based? The reason the Edge boys play at a higher age level in hockey is because hockey (and soccer) have gone to age-based systems of play, and with good reason, mostly for all the same problems you dismiss exist with holdbacks. And these sports are stronger because of it.
