couple of huge 'red flags' to look out for
1) size and weight of trailer/load !
Your tractor only has 16HP (according to tractordata). so can't pull a lot of weight
2) MINIMAL brakes on your tractor, so basically NO BRAKES.
That is a HUGE safety factor.
3 ) tipping ( 'dump' on this side of the pond) trailers require a fair amount of oil to raise the box,so it'll be very,very slow to raise, IF there's enough oil. Most cylinders (here) are single acting, gravity pushes oi back into the 'hydraulic system '.
I know my 20+ HP 'garden tractor' cannot pull a 3x4' manual dump trailer with a full load of moist dirt and while the Kubota may have better gearing (?) it surely can't pull a 5hy8 single axle dump trailerwith any kind of load in it.
Not saying it can't be done, and don't mean to be 'nasty' just pointing out the problem you can encounter.
it'd be interesting to hear from any that have tipping trailers behind their small tractors !