Hi Guys, I am taking the camper up to Double Island on the weekend, (first time on the sand). A mate that i'am going with has suggested that i spray under the camper with fisholine to prevent rust. I have a Vacation camper and have checked they website and they state that the chassis is galvanised, and the body is zincanneal rust proofed with Penitrol. Do you think i need the fisholine or just a good wash down when i get home?. Thanks in advance, Darren.