i measured it and the center of the hitch receiver is 6.5" off the ground and the included ball mount is a additional 3.5" rise to where the ball bolts on. i also personally have a 4" mount rise to use if needed but this will work fine with my trailer. (it only has 8" wheels)
and the 6.5" is not any problem because with no rear overhang its too close to the centerline of the axle to have any clearance problems, unless of course it the big 15" and bigger boulders offroad.
i have tried it with my friends jet ski trailer (8" wheels) and it works fine, loaded and level.
im only looking at a mini tent trailer application, no slide-outs or rooftop applications. :-)
20lb tongue weight recommended