Jo Ann,
Though I know of all the problems of traveling with the tank full, if you
just drive down the road 10-20 miles, all breaks down, and will
fly right out. Then, close the tank, add five gallons of water, open,
and all is clean, rinsed and ready to go! If you are worried about the
weight of the water in the tank while traveling the first 10-20 miles,
before leaving the campsite, dump as much as possible. Close the
tank, put about 2 1/2 pounds of bag ice down the commode, drive
to your next stop, by the time you stop, the ice will have moved around
breaking all the stuff into a slush, add a little more water and down she
goes!
Paul Waddell
WBCCI/VAC/WDCU