Ditto, it's paid for and I need this thing to last 10 years and I hate looking at rust. So I got it Krown rust proofed, line x'd, bought some Krown in a large spray can so I can touch up areas in between my yearly visit. Going to get some mud flaps too, need to protect the rockers but eventually I will have the rockers sprayed with Line x. I hand wash and wax regularily but during the winter I will go to a hand wand spray off once per week to spray the bottom of the truck.

Good luck and let us know what you decide on.