I have one convereted to taildragger, wires on the back, struts on the front and put in a Saito 56. It was like a whole different plane. But I wanted more. So i moved up to a Saito 72 with a 12x6 prop. First flight pulled the firewall loose. Beefed it up some. Almost unlimited vertical, goes for a long time straight up. Takes off in about 10 feet. I believe it would hand launch by just letting go of it. It's just a lot of fun.