I had a custom built 5th wheel trailer made last summer and it never was painted as i opted to do it ourselves -- well summer came, fall came and still no paint. Now winter is about gone I need to get this done. What are my options. Case's of spray paint? Borrow/rent a spray can like the boby shops use? Rhino line the trailer with kits from auto parts store? Planning on taking all the boards off, sand blasting or at least sand trailer. Very little rust but I assume this should still be done. Then what about paint? Primer, 1 coat or 2 coats??