When I bought my first diesel pusher, the RV market was bust and we decided to rent our 30' Fleetwood Tioga class C instead of selling it.
For insurance we used MBA and it was about $85 a month for the commercial insurance including a 1 million personal liability umbrella. they also sent me a training packet and all the documents (including contract) necessary to start my business. There are many "rules" to follow I never would have thought of, and ways to know who to rent to and who NOT to rent to, LOL
The experience made me $12k that year, but was not worth the headache and liability for me, and my RV was trashed.
Monaco Executive '44ft(Triple bunkroom for the girls)
Towing a Jeep Liberty CRD Diesel