That FB of mine earns it's keep, and does nearly as many miles with a trailer as without. Most of the time it's just the box trailer, though the box trailer gets loaded to the gunwhales with camping gear:
The way the kids keep finding additional crap to take camping, I may have to fit scavenger boards to the box trailer. A typical trailer run for me is 500km each way, with four kids in the car. It accelerates like a dump truck, though brakes OK. I leave a lot of room in front of me, especially at freeway speed.
My car trailer comes in at 750kg, Daves is probably a little heavier. Both mine and Daves have brakes, so I can legally tow a 950kg car on the trailer behind the FB. The red wagon (no motor or gearbox) is OK, though I can't tow an FB/EK with an engine in it

. I passed two police cars on the way home from Daves, both of them stationary at the lights (plenty of opportunity to pull me over if they wanted to). Neither one batted an eyelid.
Cheers,
Harv
327 Chev EK wagon, original EK ute for Number 1 Daughter, an FB sedan meth monster project and a BB/MD grey motored FED.