Really slow paced, low impact classes were never developed for the AMA rulebook.

Keep the planes to 14 ozs or less with wing areas around 300 sq inches and just enough power to manuever at will but keep the speed limited to about 35 mph. I've flown this formula over the years locally and you can fly all day with the same planes if you bring clear packing tape and CA glue for random repairs. A good day at the field for just 2 combateers is typically 12 matches that last 15 minutes each.