The key to trying to sway a ref to make decisions to your benefit is to understand that you aren't going to change their mind on the current call. You've got to accept the call. You can calmly explain your side, or explain why a call should have been made, but screaming and hollering won't help you. All it's going to do is make the ref biased against you. Instead, being rationale and giving them something to think about will have them more likely to make the call your way next time. As a goalie, if I'm getting hacked, I pull the ref over after the stop and let him know they got my hand pretty good on the last play. I'll let him know I'm just worried about getting hurt, I don't want to get a broken finger or hand. The ref will most likely keep a closer eye out for whacking, and warn the other team to calm down with the stick work.