I managed to get my mits on a Durafly Spit recently, like the ones HobbyKing sells, and did a PSS ridge soaring glider conversion on it involving alot of strengthening, a repaint and cockpit detailing. Had no idea how it would go, but was pleasantly surprised at how well it flies. Heres a vid of the maiden in around 10kts with no ballast. She should honk along ballasted up.