A few hints from my towing expierences... I have a 16' 7000lb dual axle trailer.
Figure out what you have, and your worst case load for weight and length. As shown in pictures on this thread, a long load on a short trailer can be a problem
My worst case is when I have my mower on. I have a smaller Kubota, an older
B8200( same size as
B2710). I always run my loader, even though it is a quick attach. With the loader at the front of the trailer, my mower fits on the trailer, but the tail wheel hangs off. Fortunately, it balances pretty well(and, my tractor is light, at only about 3000lbs). When I run the scraper, I have a couple feet front and back to move/balance the load.
My trailer has a cargo capacity of 5500lbs. My 3000lb tractor is well within that. For your heavier tractor, add up the weights for everything you might carry. The numbers will surprise you... I have occasion to carry the tractor, mower and scraper some times. That is pretty much my max tractor load. I add the numbers for things like:
tractor
loader
mower
scraper
post hole auger
full fuel can
tool box
ice chest with lunch, refreshments
water cooler(I always carry a 5gal water cooler)
I'd bet your tractor exceeds the 5500lb capcity of a 7000lb trailer(remember, the trailer is included in the gross weight, mine weighs 1600lbs+/- 100).
Think too, about what else you might haul. I have hauled a car, pipe, lumber, firewood, Cub Scout parade floats, Cub Scout day camp docks for water front activities, small Bobcat, medium Bobcat, track-loader, my Kubota, my Farmall, my Dad's Ford 2N. Some of this was light, while some like the medium Bobcat were at my trailer max.
A few things to think about while you are looking at trailers...
A good brake controller
A spare(terrible to have a flat with no spare
Spare tire bracket/mount
jack/lug wrench(my trailer uses different size lugs than my truck...
LOTS of chain and rope hooks/d-rings
Lots of chain and a good set of binders(at least four
From what I have seen of similar tractors(my brother in law has a Kubota
L2950), you would want to look at a 10klb trailer. Probably start looking at an 18' minimum, more like a 20' if you haul a rotary mower.
As long as you are at it, add up the weights for a trailer, tractor, implements, tool ect and make sure you have sufficient tow vehicle too.
That's more than you asked for, but are some good things to think about.