Well i like the KISS rule(Keep it Simple Stupid).
I'm not planning on using any kind of plumbed water systems in a teardrop. i plan on using gravity water containers... less hassle and maintenance.
I talked to the owner at the site above, and had a look at one of his large models. I really liked it.
I inquired abot a wheel swap option to allow use of my 15" Nissan 6bolt rims, and am waiting for a reply before i put down a down payment. As for tandem, i dont think the extra expense would really be worth it for my off road appication. They're cool, but not for me.

peace
al