Thnx to all who replied to my insurance questions. It echoed what others have told me about their experiences w/ USAA. I wondered about them "subbing out" RV insurance to Progressive. Maybe that's something they do for specific persons w/ big motorhomes. I guess I'll stay w/ USAA.
Also I'm pretty sure I'm gona' get the Good Sam CSP plan for the miriad of stuff in our TT, now that the factory warranty is up. They quoted me $230 a yr with a $200 deductible.