RE: C-ARF Ultra Flash build Thread + Video
Always flew my KingCat and BobCat C without as they also have tonnes of flap. The Boomerang Nano I used to fly uses CROW, split rudders and 90 degree flap to add drag!
The Classic Flash was the biggest winner as with full flap the AB section messed up the elevator response and with less flap it was lacking drag needing glider approaches. The CROW lifted the nose and poured on the drag.
D