One of the best uses I saw one camper do at a camp ground was he had a 30GAL empty tote sitting in the back of his truck bed.
He hooked up his FLOJET and pumped into the tote in the back of the truck bed. Then unhooked the hose from the trailer end and tied off high on the truck and headed for the dump.
He then used gravity flow to empty the tote.
No mess no fuss... The camper said one thing to watch for is to always have your tote bigger than the tank you pumping from. Said it was hard to tell when you was approaching full on the tote in the back of the truck. Makes a big mess he says haha...
Roy Ken