I bought an Accipter Badius from Raidentech that used the throttles (left and right) to turn and gain or lose altitude.
When the Rx went out one day I wired the motors directly to the on switch so it ran wide open all the time. It was a high wing so it was stable all the time and I'd just throw it and see where it went. Got a couple of really high flights out of it before it disappeared over a neighbors woods one day.