Your buyers Broker if they are worth their salt
should be able to give you some recommendations.
I had never sailed anything in my life and had never taken a class, but had significant “big boat” experience with 45’ Sport fishermen, and that was all my Insurence cared about. I’ve never heard of anyone getting discounts based on the number of ASA classes
they have taken, which I think odd.
I wouldn’t sell myself short when talking to the Insurence people, if you have significant experience in this size of boat
, tell them how much.
Strangely mine didn’t care if it was power or sail.