In my opinion, you would incur great risk. There are all kinds of things that can damage your rig or anyone/anything else and your insurance will not be covering you, them (the "renters" or any other injured party) or it... if you get caught. LOTS of ways to go bad. I know that wasn't your question but the question you are asking implies you didn't consider the liability issues associated. If you did consider and have concluded that going ahead with the plan is a good thing to do, it's unlikely other owners will join you in the exposure.
I'm not aware of specific company names but I believe there are agencies to which you can "rent" your RV and they will, in turn, rent it to someone else and, at least, provide some of the insurance that you are lacking. But, if there is a lien holder on your RV, they will not be amused by even that plan.
