I don't mean to beat up on the 1/2 ton will pull anything crowd, but you don't have enough truck. I also understand that is what you have and it will have to do for now. The best thing you can do now is replace the tires. TIRES. Also, with that long of a trailer, you really need two sway bars. They're cheap and make a lot of difference. I pull with a 3/4 ton and added Stable Loads. It made a huge difference in reducing the porpose effect. IMO, get some E rated tires, a second sway bar, and adjust the hitch then. Stable Loads are a nice feature, but not as important as tires. You will have to just get used to some sway, no matter what size TV you have, but it should not be so bad as to create a control problem. I would rather get smacked by the little woman than by the retaining wall. First, get some sturdy tires.