I know this thread is a little old but when I had searched for solutions for the issues my wife and I were having with the Ram hitch, this thread caught my eye. Even though we're relatively new to RVing, we have about 5,000 miles under our belts and probably a couple of dozen hitching/unhitching episodes which gave us motivation to seek out alternatives. I was all ready to order the Bulldog style but an article on etrailer.com shifted my interest to the Demco, which I ordered.
I had ordered the bolt-on style and I was ready to do the project myself but, on our 17B, it's not possible to install a bolt-on coupler (the landing gear support is in the way). Since I don't know any AWS-certified welders, I was forced to search for welders in my area and I think I contacted about 8 of them by email which included photos of what I wanted to have done. Only three replied, with quotes of $460. $525 and $1,850 (really). I towed the trailer over to the guy with the lowest quote. In one of my former careers as a heavy equipment mechanic, I did enough welding to know an expert craftsman when I see one and the guy who welded on our trailer was very good.
But, beyond his control, was the fact that the Demco coupler sat further aft on the trailer's tongue than the Ram did and this forced the landing gear to press on the propane tank cover, which, in turn, presses up against the front storage box. It's not so big an issue with the propane tanks but it is annoying to have to force the lid of the storage box open and closed every time we access it. Now, we're questioning our decision to make the change.
Safe travels.