Not to dispute what all those estimable dealers (salesmen) have to say, but about the first time a large semi goes barreling by I suspect you might find that you have a lot of tail wagging a very small dog. To me, what the dealers are telling you really pushes the safety envelope. Best of luck if you decide to try it.
Happy Camping! ///// Richard D.
2006 4x4 Ford 250 SD / 2007 Flagstaff 827 FLS
One very patient wife and one furry child who travels with us. Forty-two years of trailering and camping, and I still have a blast.