Yes David, might be well worth it since Brushfire flies so well (as far as I can tell with my limited pattern skills). It's a very "centered" design avoiding most couplings in the first place. It's big and if built light can be flown slowly and close-by (sort of turnaround style), what Dick Hanson attributed only to his Hippo Tipo, the EU-1A, and the Brushfire in the other thread. And that's what attracted me.

It's said that swept-wing airplanes do rolling maneuvers especially well, and that is true for Brushfire. It's said that they don't track well in looping maneuvers and I find that's as well true for Brushfire, at least a bit. But the snap-flaps seem to make up for just that, so I suspect the flaps were a (another) clever trick by Ken Bonnema. I'd just like to be sure.

By the way, the simulator is good enough to render the relevant characteristics. I take it the other way around: I don't need to build several models in reality to try them out since I can do it virtually. Even if I sometimes doubt if it's less work to build a model virtually...