From my coaching experiance this is what I have to say to those who haven't ever coached and to those coaches who cause the problems mentioned above.
1. Don't call the referee over to discuss a judgement call.
2. Don't try to make yourself seem smarter or more knowledgeable about the rules than the ref even if you are.
3. Don't point out there own mistakes to them unless it resulted in the current score not being right.
4. As a general rule of thumb the only time you should call a ref over is if you want clarification about something he called.
Too many times i've seen a coach call the ref over and say "explain this too me" then he does and the coach starts arguing with him about it. Your not going to change a refs mind about just about anything. But hey don't take my advice and see how many times you win against the ref and see what happens to your wrestlers then next time that same ref does one of your matches.