RonDawg:I don't know if anybody can confirm this, but a friend of mine in Honolulu says that you cannot buy insurance for your house if it's located on the Big Island, due to the presence of the volcanoes.
Not true for most of the island. There are spots where that can be true. The island is essentially divided into lava zones... http://pubs.usgs.gov/gip/hazards/maps.html If you live in zone one you are probably out of luck. If you live in zone two you are probably paying up the nose. Zones 3/4 or higher, it's not really that big of a deal.
You'll know who's going to have a tough time picking up insurance by looking at property values. The lower valued subdivisions are either insurance risks or simply remote.