So I had BoatUS (Geigo) when I lost my C&C 34 in Hurricane Matthew. Something came down the river and wiped 6 boats off their moorings during the storm. God they were a PITA to deal with. The boat was a total loss I know, because it was on an oyster bed and the rudder shaft was bent, multiple other things that took it above the 90% agreed value threshold. Of course, all but one yard in town was wiped out and the waiting list to get hauled was forever and a day. So, without hauling, BoatUS kept strong arming into not paying. Things took a while and a lot of persistence, but I finally got them to total it (we were only $1,000 apart on the totalling vs agreed value percentage). I'm glad I did! By the time they took the boat and I saw it hauled, the rudder was trashed and the outer skin along the port side was ripped off. I would have been totally fucked if I had accepted their offer. Now I get to see her on the side of I-95 in a salvage yard at least once a month. She's been sitting there slowly getting chopped up for 3 years...
Anyway, I replaced it with a Tartan 37. Shopped around and it turns out State Farm has reasonable yacht policies. No haulout or survey required. Agreed upon value was based on Yachtworld research and Blue Book, which was $13K higher than the purchase price. As I did work and provided pictures (electronics, sails, paint job), they increased agreed value and is now 2X the purchase price. I'm happy with that and it's rasonable, putting the agreed value in bottom 25% of Yachtworld asking prices. So probably 40-45% of actual values these days. It also makes me comfortable that if the rig comes down, I can replace it and still be OK.
Cruising grounds are Maine through Key West as a standard.
Progressive wouldn't insure it due to its age (1982) and being on salt water. Interestingly, my dad has the same boat, same year (7 hull numbers different) on Lake Erie. Progressive would insure that because it is in fresh water (e.g. no named storms).
Check out State Farm in my opinion. I've had vehicle claims with them and if I ever have to file a boat claim, I suspect it will be easy to work through.