The large box shape of a Travel Trailer is what hurts your SUV's towing ability. Towing a 7k boat or a 7k TT are two totally different things. If you look in your owners manual in the towing section, there should be a statement concerning square footage of the frontal area. Think of riding a bicycle with a sheet of plywood strapped to your back versus riding with a 2x4 board.
I am not commenting on your vehicles ability to tow any particular trailer, just pointing out that max tow ratings are only a guide line and must be down rated for a TT.
