The thing about collegiate summer leagues is that you won’t know what is best for YOUR KID until his spring season is over. It could be that he played so much in the spring that he needs the summer to rest and recover. That was the case with my son - and I never anticipated that being a possibility. To have your bases covered it’s best to have something lined up now in case it’s the preferred path in 6 months. It’s also best if arrangements can be made now w/o any financial commitments. What you really want is an option - and most coaches aren’t going to be any help with that. My advice would be to arrange something yourself and then decide later if it makes sense to follow thru with it. A phone call, text, or email to the league director would be a place to start. The director will know which teams have full rosters and which teams don’t. That’s what I did and it worked out fine.