I'm a little late to this thread, but I just came across these pictures of my tow bar. I've been using mine for more than 10 years now and have towed at least 75 Speedsters with it and logged several thousand miles with it. I originally used an S-Type Jaguar to do the towing, but bought a Toyota Tacoma in 2015 to replace the Jag. Mine is slightly shorter than some of the others and I think that is why I have never experienced stone chips on any of the cars I've towed. My theory is that the stones have less of a chance to bounce up and hit the car. Mine was also modified to add some additional strength.