AAU Tryouts during regular season

What are the opinions of AAU tryouts during the high school basketball season?
What if a key player gets hurt ?
Should a HS coach tell his/her players not to tryout?

Usually the bigger programs will go off a players resume for tryouts. No AAU coach wants to put a player in a bad spot with his high school coach during the regular season. I know for a fact that the Rivals program will limits a high school player from tryouts until after their season has ended and it was always that way for my son with the Jayhawks. Go to the tryout, talk to the coach and you should be able to avoid a risky situation.