I am 78 years old, had knees replaced, and use a dolly. I have used one for many years with not one problem that I remember. I have towed Hondas, Toyotas, etc and currently tow a Smart car. I can load or unload that thing in 5 min and have yet to get into a position or camp ground where I had to back up because I pay attention to where I drive. I always get pull through sites and have never failed to find one. Mine is old now and I have replaced the tires twice because they got old and I carry a spare just in case. I paid $7--800 for it new and as I said before it has fit several RVs and cars over the years without any modifications. It is a Master Tow and I have 3 different size tie down straps for it. You tie it down tight and you are good to go but even so I check EVERYTHING about 50 mi out---you never know.