Granted, since I have a 17" Casita
, it's a little bit of "apples and oranges", but if you really want to install a frame mounted 2" receiver type hitch, I have included a few pictures of the one I built on mine. I "sawzalled" off the cheesy "tin foil" sewer hose bumper and installed (welded) a chunk of heavy-walled 3" square channel directly to the exposed ends of the 3" main frame channels. I also added a cross-wise 1 1/2" piece of square channel in between the main frame rails for added support. Under both of these I welded a piece of receiver tube channel, which is my new receiver. I carry a Stowaway
brand lockable enclosure (rotomolded plastic) box which serves as a convenient "trunk" to store all kinds of stuff.
As has been mentioned above, some folks caution against putting too much weight on the rear of the trailer, but if you can keep the weight distribution ratio within towing specs (keep between 10-15% of the trailer total weight as a figure for calculating your tongue weight requirement.) Ex.:
If your trailer weighs 2,000 lbs, your tongue weight should be maintained between 200-250 lbs, or you may find your trailer hard to control due to fishtailing and swaying problems associated from having too light
a tongue weight.