Play this out just a bit...more and more holdbacks makes it incredibly difficult for actual on-age kids to make a team. In 10 years are we looking at a situation where you HAVE to hold your kid back so they can play club lacrosse? Literally holding them back academically so they can play a sport that doesn't even have full scholarships (as if they are going to get one anyway). This is how you kill "the fastest growing sport in America". This is why you need an actual governing body.