Did you ask Progressive if they can issue a Valuable Personal Property (VPP) policy? That's what USAA did for us. This is in addition to our renters' policy to cover contents, an umbrella policy for liability, and the usual auto policy to cover both vehicles and the RV. Of course, state insurance commissions govern what can be done in each state, so what a particular company like Progressive or USAA can do in one state, they might not be able to in another (we are domiciled in Texas).
Rob
U.S. Army retired
2020 Solitude 310GK-R
MORryde IS, disc brakes, solar, DP windows
(Previously in a Reflection 337RLS)
2012 F350 CC DRW Lariat 6.7
Full-time since 8/2015