Hi Steve I love your aid. It is simple and it works very wel.l I also use a 3/4 inch double braide rope. Everything you demonstate is great, when i see that the underbody tows the upperbody than the arms and hands. then the towel. Why do you stop at two arms straight. When i swing my left arm is close to my left breast it only comes uo at the end at the finish. When i look at pictures of great golfers like Ben Hogan they still have connected their left arm and left brest almost till theu finish.