I think both of your last suggestions work well, run when there's no reasoning with the person that's ruining your fun, but always try to talk and reason with the guy/girl before that. Most of the time talking to them works if you're nice enough and your points are actually valid. But its also not always bad. My keeper got attacked yesterday by a bomber, a fighter and a BC, I was alone on my keeper bomber. Now the fight went well because the BC's flak was actually killing and hurting the guys that were fighting against me more than it bothered me. So as I said, its not always that bad. Just find a way to deal and cope with every situation.