My bro and I have been insured with them for the past 8 years. We now insure our 2002 29' Magic for about $1300 a year thru them. We got boned on this first year because it was consider a "hi-performance boat". We should see a 30% drop in rate for the second year (next year).
We've only filed one claim with them (about 7 years ago) for about $1300 and they were quick and easy to deal with.
We also used BoatUS to finance our boat at 6.49%