@realjohnboy,
Years ago I ran a large agency that, among other things, featured community volley ball leagues for folks who were out of school and for school kids who for whatever reason couldn't get on a school team. Our poor referees took such abysmal abuse, we finally established a thoroughly non regulation rule that any profanity directed at the referee would result in points taken away from your team.
That effectively stopped the abuse, and it was amazing how creative the players became in expressing their displeasure to the referees.