What kind of waste water tanks do you have for portability when no sewer hook-up is available? I've been reading a great deal about them and Thetford seems to have a nice one...sewer hose is internal and makes the job less messy, wheel swivels on all terrains, but reviews weren't too good for what remains after you've dumped it, and the location of the drain itself. Another brand is Barker, but the thing comes with lots of pieces and is a bit more expensive. It doesn't drain exactly all the way either...
Since I will be mostly be doing the job by myself, I want something no bigger than 15-18 gallons with a handle for my trailer hitch and easy maneuverability.
HELP!! I'd like to make this purchase soon.