I have heard of guys doing team combat, and also doing "bomber raids", where one guy flys the "bomber" usually with multiple streamers, and he has some fighters on his side and the other side has fighters. The idea is for the defenders to "kill" the bomber before it makes a certain number of laps around the field and drops it's bombs. If you loose your streamer, you land, so it's all about getting the other guys before they get you and getting the bomber through or stopping it.

Some guys were playing around with "straffing runs" by adding teathered ballons out in the combat area to pop for points during the match.

There are a lot of fun things you can add to make things interesting.

If you're trying to keep the guys you have, one of the best things to do is to limit power available, so guys don't trash so many airplanes. Eventually guys get sick of too much rebuilding, and the faster you go and the heavier you are, the more rebuilding you do. Just saying "stock exhaust" and a 10x3 APC prop on a .25 will slow the planes down quite a bit and you still get a lot of cool combat. SSC class also does this, but with .15's. Since it sounds like you guys are already running .25's and bigger, you might want to stick with that.

If you want to come up here, you're welcome. We started the last contest a bit late, we were aiming for noon, but the football game got in the way, so we started later.