Abstract: A wind-powered flying device, generally known as a roto-kite, is described which allows for flight even in slight wind conditions yet also functions well in strong wind conditions. The roto-kite has a stabilizing keel with adjustable position on a main body shaft and rotating wings hinged to the shaft to allow for flapping to relieve stresses from unbalanced forces during rotation. A tether is attached to a tiller arm on the keel such that when the tether causes the tiller to turn in the wind the roto-kite changes direction.