What year is your son and how serious is he about playing at the college level? Was there any type of written or unwritten rule with your high school coach about off season practices? In theory, I completely agree that HS season is all about HS and offseason is all about travel and that communication with the coaches (and even better between the coaches) is key when there is a conflict. However, that assumes that both sets of coaches have your child's best interests at heart and not the interests of their program. We got caught at the intersection of the two...with one coach more concerned about his program than the kids...and the results were pretty awful. Some coaches do not quite realize how the recruiting landscape has changed (or they realize it but don't care). I would be happy to talk more via DM.