[Andy]

Sounds like you were OK in how you handled it up to a point. Explain the ruling to the coach, let him gripe a bit, then tell him that is the ruling, we're playing ball now.

Depending on your mood at this point, you have some options:

If he is still griping, either a warning "Coach, the play is over, I don't want to hear anymore about it", then stick him if he refuses to give up.

Or after explaining the ruling he is still going, stick him now.

I definitely would not let him gripe about it for four trips up and down the floor, especially at the AAU level.

I also wanted to comment on something else in your post. You need to handle this discussion with the coach yourself. Don't call your partner over to help you. This leaves nobody watching the other players on the floor. It could also give the coach an opportunity to play you against your partner if he senses that one of you is unsure about the ruling.