I know a few guys that always run without a WDH. I'd worry about the load on the truck's hitch - wouldn't make me comfy. That can be a lot of weight under the right circumstances. With a properly installed and set up WDH, the rig feels great loaded and looks level too. Police have looked me over by riding along side of me about 2/3 of the time I've hauled loads in a few different states. Thankfully they've just kept on down the road so they must have been satisfied.
I can't find my photos of the Brimar I used with a WDH. The box was mounted to the tongue via studs. I and a friend unbolted the box, lifted it up off the studs, slid it back toward the trailer and slipped some 2x under it. I strapped the 2x to the frame and then strapped the box to both. Doing so left just enough room for the pinch bolt style snap-up brackets. It was a temporary fix and after the run, the box had to be moved forward again to dump the load.
There are different styles of snap-up brackets available. The style I have is removable and uses a pinch bolt to mount on the channel. The pinch bolt style is not easily used on a Brimar as we've both discovered
There are weld-on and bolt-on permanent styles too. Get a pair of those. That would work and if you already have a pair of the pinch bolt style, you could still use your WDH on another trailer
The other thing my dealer said they do is weld a piece of channel on the outside of the trailer's channel to bolt the snap ups to. I can't quite picture how this would work without off setting the welded on piece. Might as well get permanent snap-ups installed.
Trailers save you money. You have to use them a lot.