Hi volks,
This is in the archives, but.....
Like others, I put a short length of garden hose on the plastic drain pipe
coming out of the van floor, run it into one of those orange 5 gallon
plastic tanks, lay that on the ground and that works fine. Easy to put up
into the luggage rack and bungy down, and easy to dump into appropriate
places when I get there. I don't like the loss of clearance that installing
a tank would cause. I've dumped its contents into sinks in public bathrooms,
at camp grounds, etc. where you'd normally find "gray".

best,

bob