I built one of these back when they first came out. It wasn't an aerobat, but it flew okay, about like my 3-channel Goldberg Eaglet. Very slow with an O.S. 20 FP--I could land it straight down in a 15mph breeze. I added a tailwheel so I could taxi. It needed a long take-off roll--possibly due to the forward-mounted landing gear--but I don't remember any other ground handling problems. In the air it was not terribly responsive, wouldn't do any tricks, but it was stable enough and it looked great. Hardly uncontrollable.