I've got the same rig you have. I have a 31 ft Starcraft Launch Ultre Light. When I bought my TT I told the RV dealer to set it up right or I would drive the whole thing into their show room if it wasn't. They put on a WDH and electronic break switch. I have zero problems towing. No sway at all. I have found that the sweet spot speed on the open highway for me is about 68 mph. Mainly for gas. I average about 7.8 mpg without significant winds. I can go faster, low 70's, but gas mileage drops down to 6.8 mpg if I do. Next truck will be a 2500 diesel. For three reasons: one is power, the second is gas mileage and the third is the ability to refuel in diesel pull throughs.