If you decide to build one of these disk planes I would recommend that you use a bolt on wing and add a steerable tail wheel. Simply mount a tail wheel to the rear of the fuse and connect it to the rudder horn, a real simple hookup. The plane will steer without a moveable tail wheel, but the plane has to be moving pretty fast for the rudder to turn it. If you want a tight turn use the steerable tail wheel. James Goss