Here is a picture of my Cosair. It was orginally set up for RC but I modified the wing and added a throttle control for CL. It has an old Fox 40 on it and it hauls butt. You need to really hang on but it's fun. I use a set up to hold the plane when I first start the plane then release a pin I have on a light rope to release the plane for flight. That way it won't take off or run amuck before I get to my handle. I use a J Roberts handle. The plane has a lot of torque and speed that I don't have line drag to worry about and I very seldom run it at full speed, it will pull your arm out. I'll take off and then throttle back so it will touch down and run in a circle on the pavement. I will even let it come to a stop then I'll give it full throttle and take off again. I have the tail wheel bent so the plane will turn away from me on the ground. That keeps line tension. I have an old Sterling P 51 I do the same thing with.