Would you rent your RV if you could earn $15,000/yr?

Calculate the cost of RV depreciation, cost of commercial insurance, cost of a commercial tow service policy and I doubt there is that much profit if any. No doubt you can make money otherwise nobody would be renting cars or RVs. That said, I doubt you can make it worth while for your personal unit. Keep in mind the commercial companies buy at wholesale and have a work crew.