[billyu2]

Just heard this story at our local meeting last week. Former Ohio State player Treg Lee does some officiating in our area and was involved in a very similar situation: Youth basketball, obnoxious adult(s) in the stands. Treg is very soft-spoken but at 6'8 is a pretty imposing official especially when working a kids game. So, with the adult doing his rant in the stands, Treg stepped away from the youngster he was about to hand the ball to and made eye contact with the adult. Treg pressed his finger to his lips, then pointed down toward the youngster as if to say, "Be quiet. These are kids down here." The embarrassed adult heard the silent message loud and clear. End of problem. Perhaps Treg, with his basketball credentials and physical stature, can do that while we can't.
But it might be worth trying. Treg Lee is a wonderful gentleman. If you care to, google his name. You should find a nice story about him in the Columbus Dispatch and a video interview that is very interesting.