Towing new trailer home with out WD

I once owned a Suburban and towed my first camper, a Dutchmen Sport "Lite". I did have a Reese installed by the dealer, but after getting home, I did try a few times without the WD bars, and the end of the Suburban simply sunk once the tongue jack was cranked up. I didn't dare drive it that way. The most I did was move it a few feet in the driveway. It simply bottomed out the rear of the Suburban. (See my profile on the left for a photo of it). Hopefully, your Suburban is a bit newer than mine was at the time and maybe built with a more stout suspension.

I, for one, would never tow it without the WD hitch installed first, ANY DISTANCE on a ANY public road. Why not pay the dealer service department the labor fee to have them install it, if you already have it? They won't let YOU install it on their property because of liability / insurance reasons. But THEY probably WILL install it if you pay them!