Do you really think the trailer tongue is overloaded?
I was speaking more to the weight distribution on the trailer than the weight on the tongue itself. The rear wheels of the tractor is nearly between the two axles of the trailer, the front wheels (with engine block) near the very front of the trailer, THEN the weight of the FEL way out front. This would constitute far more than the "10%
guideline" for distributing weight between the trailer axles and tongue.
When I load my tractor on my trailer, I generally put the tractor body squarely between the trailer axles...the rear tires a little behind the rear axle, the front tires a little ahead of the front axle. I figure between the HST transmission and the engine block, this is decently centered. The weight of the FEL then constitutes my 10%. If my BH is attached, I slide the whole thing forward 6" or so to compensate, putting more of the BH weight over the rear axle instead of hanging off the back of the trailer.
Whatever the weight of the trailer (bumper-pull, I mean), 1,000# or 10,000#, it will always tow better with the weight properly distributed. It is a trailer dynamics thing, not a weight capacity thing.
I still love the trailer, though. I would have loved my 5'x10' to have been built like that. Sweet rig.
Can you load this truck with the BX?
I bet he could, but the ramps would be as heavy as the trailer. And I'd hate for something to go wrong (who knows...ramp breaking, engine stalling, tires slipping, beer spilling...whatever) with the tractor 4' off the ground, not quite in the truck. Don't imagine a BX "falls" with much grace.
EDIT: Unless you mean: Can he get material into that truck with the BX...I had stakesides on my 5'x10' and had to cut them down to allow the bucket to curl and maneuver without ripping them off. That truck looks a little tall. If he took the wood rims off, maybe, but it would limit his volumetric capacity to 12 teaspoons. Maybe 14.