The three channel one was covered with supercoverite cloth and painted. Its wings were extended as to not shorten the main spars. It floated marvelously but had a slow climb with the .049. When the .061 was installed it had no problem with climb. It would execute stall turns almost hammerheads at each end of the field, inverted flight was limited as I had to loop to inverted. It taught me to fly on the wings not the engine. It didn't make much headway into a 15 mph wind but downwind it went fast. I never missed the ailerons except in rolls. I always took it to the field to "warm up" before flying something else. It never crashed or broke anything major. I just provided hours of fun.