I used to get upset while towing my ute trailer too, it would wag back and forth at 53mph. Other people would be flying with trailers doing well over the 70 speed limit. Why can't I go 70? Well, after a little searching I got it figured out. The trailer's front end was up, the trailer was catching air under it. I changed the ball mount to a lower one and that solved the problem. When we moved the trailer to Tx, I ran with everybody else on the road and the trailer tracked perfect right behind the truck. Now both my trailers have a slight nose down attitude and tow well at speed, well enough to get me a 73 in a 55 zone ticket! Just a thought, you could have something else wrong.
I know your dog was happy to see the old homestead, and you too, to see your pears.
Hey thanks for that tip on towing. I was suspecting very flexible springs to the weight distribution of the load in the trailer. When were leaving Meridian the trailer was towing great at the speed limit of 60 mph and then I hit a rough spot on an overpass and things got wild. Even slowing to 55 the trailer would sway but was acceptable. The drive was very tiring for me watching the slight sway. Peggy was in her car following behind me with her hazard flashers on to warn traffic we were slow movers.