[macojoe]

U-Haul still does it. About $150 I am sure. I f you have the no how and tools and time you could buy one and install on your own.
I did mine about 5 years ago and it was about $100. Mine is kind of small for what I do. It is a Class 3 so the boat is fine. But i tow a 9000# camper to. But I have tow bars for evening out the weight.