I hooked up to my trailer on Saturday and drove out to a certified truck scale.
I weighted my tow vehicle and the trailer together, then drove off, unhooked the trailer and weighed the tow vehicle alone.
When I subtracted the two, the trailer weighed 3860 pounds.

This means if I go by the 10% - 13% of total weight to be tongue weight, I need about 425 pounds of tongue weight. I don't have a scale to measure that high, so I'm not sure where I am with that.
That's with a lot of gear already inside but nothing in the cooler or refrigerator, if you look through my pictures you can sort of see how much stuff I already have inside. I think another 200 pounds of gear and food could be expected for a normal camp out.
Now... This is before I load in the motorcycle.
The Road Star road bike weighs over 800 pounds. The BMW dual sport bike weighs about 450, (I think)
I will be able to adjust the tongue weight by adjusting how far forward or back I tie it down inside. I think total trailer weight with motorcycle and gear could top
4700 pounds fully loaded.
Gadget Man