Here is a picture of my 02 Dodge and the 7X14 inclosed trailer that it pulls , and my 14ft box truck both of these units have hot water machines and 325gal water tanks in them. The trailer also has a 6kw generator in it.
Nice set up. I'm in the progress of setting up a 18' inclosed to be up and running in the spring. Did you use any thing to cover the floor to try to keep it dry? ( rubber mat or a sealer ) Also how did you vent your burner. I have a V front w/ a ramp door in front that i was going to vent out of, but with the air flow from driving I think I might need to put a valve in the duct to keep incoming air out.