Other than just the weight/load numbers you should abide by, if you tow in an area with a high % of abnormal wind load (the West), sway should be considered. I don't know how you tighten that up other than less links on the tow bar chains. No one wants to feel they are right on the edge of control, but it's a sensation that comes with towing vs. not towing. I was OK using dual friction bars towing 27',5100# and a 3/4 Surburban. Then dual cam when I moved up to 31',9800# and a 1 ton truck. The second setup sure had less anxiety. I don't know how I would have spec'd out the better sensation beforehand other than reading info on rv.net. As you see, the ads state "their's is the best." I try to eliminate the possibility of under design in case of law suit.