One other thing that has occurred to me -- If your son has good video -- and by that I mean that it's video that clearly shows that he's capable of playing at the level he's being recruited for, then your son should send links in reply to anyone who emails him. Coaches who see him at HF have probably only seen him once, along with a whole lot of other players they also liked. A good video will remind the coach what he liked about this specific player. This worked well for our 2017.