Just did the longest trip so far. Only 180 miles away. 4 day weekend. Took off Friday, came back Monday.
The trailer performed magnificently.
I've always had a little niggling doubt about the drawbar attachment. Its a boat trailer, so two side rails run forward and take a bend to form the drawbar.
Trouble is, the bend is formed by cutting out a wedge of material and bending the rail and welding it. It wasn't me who did it, and I wasn't there when the unknown (allegedly qualified) welder did the job.
I've marked a couple of spots on the corners of the front box, where I monitor the gap between the box and the front of the cabin. I wrote the initial measurement on the box, so any time I like I can check whether the draw bar is bending up. If the bends fail and the drawbar starts bending, the top of the box will naturally move closer to the cabin.
After 435 miles of outback roads, most sealed, some corrugated gravel, hitting the cattle grids at 60 miles an hour and doing my best to take it easy on the washboard stuff, nothing appears to have moved. The gap measurement is unchanged.

- Trailer.JPG (91.48 KiB) Viewed 1483 times
I assume everyone knows what a cattle grid is, Wikipedia says they are common all over the world. Ours knock crap out of my vehicles.
I still haven't got around to installing a solar panel.
Discharged the house battery to about 50% over 4 nights.
The Renogy controller was reading 38%, but seems to work on terminal voltage. After I turned it off and let it rest for an hour, the voltage, the controller called it 52%
Too deep, but I'm not losing sleep over one deep discharge.