My
B8200 is the Great Grandad to your
B2910. It is same size, albeit only 19hp and 3-cyl.
I haul on a 16' dual axle 7000lb trailer. I fit just fine with loader/scraper mounted. In the case that I do need my rotary mower, I load it on the front of the trailer a bit over the tongue, and set the loader bucket on it. I always keep the scraper with me...
I have brakes on one axle; I would like them on the other axle to, and will do that upgrade in the near future. Single axle brakes stop fine with the Kubota loaded, but I find the trailer to be real handy for lumber, pipe, firewood, ect. I have loaded it up good with firewood, and would prefer to have the extra braking.
When you are looking, make sure to look at features, like a spare tire, and tie downs. It is nice to have places to chain things, but also nice to have hooks for ropes.
Remember too, to get plenty of chains and/or ratchet straps, and binders. The load should have an independant restraint at each corner minimum.