I agree with Zacksdad,
I have had problems with coaches in the past. I made the mistake of addressing one of them a year ago or so and my son paid a dear price. Fortunately he retired after that year. But I still have problems with things that are beyond my control and although I wish I could address them, I am concious of what transpired the last time I attempted to ask a question of a coach.
It is a tough deal with no potential for a positive outcome. And, it does not matter if it is the player or the dad who addresses the coach. The results in either case can be devestating.