My org is dealing with this now. Winter workouts. We have a stud athlete that throws terribly. Everyone in the org sees the potential and and keeps an extra eye one her. Makes sure she is doing the throwing drills correctly. After 2 weekends she came to us and said (paraphrasing) "My private instructor, doesn't want me to throw how you want.". So we all shut our mouths and that is that. she still throws terribly.If a parent is paying a hitting instructor, is it a coach's responsibility to say those mechanics are a hindrance to their daughter's progression as a batter?
Without the coach actually knowing how and what the instructor is teaching the player there is a Chance the player is doing things that are not actually what the instructor is instructing.
Same girl, showing me what her hitting coach (same coach as throwing) is teaching her. It can't possibly be what the coach wants. I know it in my bones. But I just said, I can't help you. I'll give you as much time as you want. but I don't want to give you the opposite advise your Private instructor is giving you.
I've wanted to tell the parents to find a new instructor, but How do you tell them someone that their choice is wrong.