One thing I found, but this is prolly true for any floor. Don't carry it inside a compartment, the moisture it holds corrodes everything else that's in there. Carry it out in the open. On the roof, off the side of the camper, swinging of the spare wheel etc.
Throwing it off the roof after 500km of dusty road does make for a red powder puff moment but a quick shake out and it's good to go. Much the lesser of two evils
The bag makes a great sand peg too.