HI JOHN! A lot of the high powered examples of what I've seen were deltas, Q500, Lazy B, club combat, all being flown for the hell of it, and mostly pretty hard to say came anywhere near the description of 3D aircraft. A lot of guys are catching on to taking foam electric ARFS, and outfitting them for glow. A quick coat of polyurethane fuel proofs them, and they make great sport flyers. The natural tendency to goof off with your sport plane is what spawned 3D, and there are guys hovering their Lazy Bs, Q500s, etc., but I haven't seen any of these sport plane examples cross the line into rolling circles, waterfalls, pinwheels, etc. On the other hand, the run of the mill ARF LEAD SLED TRAINER with a 1hp 40 still shows up in strong enough numbers to bring the average back down into the .75:1 range!