Ho's, rams, suicide bombing, 4 engined dive bombers, hording, porking, tool shedding, and creating a general nuisance. Thats what it always boils down to. Vet or newbie. Grandpa or pre-pubescent. Makes no difference.
You can eny them, side limit them, squelch them, ignore them. They will still be there.
If you went through the effort to keep track of how many times a player did this (another set of programming for score) you could set a limiter that prevented the high scorers from entering an "elite" arena but then again someone would be on good behavior for a time then say "what the heck" and take the ding in the "elite" arena. Out they go but the ram still happened.
Your only near term solution to the nuisance is 1000 arenas for two people with near to the same philosophy of aerial combat to fight in peace.