My current camper came with a coo. I have sold a few with just a bill of sale nothing else. If it does not have wheels or a plate no real need for a title. My JD tractor has no title. A bank may require a title but personaly I have never bought a toy on a loan, cash only. The COO I have is still in the old owners name but signed off. When I sell it I may just give it to the buyer as is, or just give them a BOS. It depends what side of the fence you are on. If you feel like a concerned citizen and enjoy more gvmt give them your money. If you don't keep them out of it. Some states may require a title. There is a reason you see a lot of class A's plated to MT or SD, less gvmt, less taxes its your money.