Tongue Weight Eh?
Interesting you say that Caverdan. Cuz there is so little weight on that tongue that if you go back and put a foot under it you can push it up a centimeter and make it meet the inside of the trailer tongue receiver thing. It kind of clicks in and out of the "seated" position on the ball. Perhaps loading the boat backwards with the cooler in the front bay would put some downward pressure on the tongue.
Trailer is super heavy duty steel Marco, but it does have a big "wow" in the deck like it was loaded unevenly and warped. I drove behind it before I bought it, empty, and even on the highway at 80 it was straight as an arrow. The Jim Jams only come into play with the boat on it. And it got steadily worse between Loma and FoCo.
The only thing I can think that would change throughout the voyage is the pressure in the boat. It was a little droopy when I got home, and I wonder if that was somehow creating a feedback type of loop making the first bounce feed the second and so forth.
Tire pressure is good.
Keep 'em coming guys. We're gonna get to the bottom of this. I love the buzz.
Got so bad on my Monday shuttle that the trailer was actually airborn at one point, pulling my entire Tacoma back and forth like a feather. Bouncing. Holy sh*& right? That was cause I loaded it with the trailer in the boat, aft of the axle. I will have nightmares about that moment for years. Got worse as I tried to slow down for some physics related reason.
One other variable. Truck is midsize; Tacoma. Trailer is full size, about two tire widths wider than my truck. Can this cause the jim jams?
Dude, I'd see you on the river but I'm hardly ever out there.