There is an RV rental company in OKC called American Dream Vacation. They may be in other cities; but they will put your RV on their lot, do all the renting, insurance, storage, etc. and for a fee they handle everything. They do pre- and post inspections of the unit, take care of damage claims, and have any repairs completed. When you want to use your RV, you just book your dates and bring it back clean and ready for the next camper
You might check this out, I understand that some people get their RV paid for by having it rented.