Good news is that we just got back to the boat and everything is AOK.
The inflatable dinghy was full of water but the outboard and gas tanks
stayed above. It started right up - thank you Mr. Honda. :-) The
generator on the big boat stayed running for the entire two days so
the fridges and freezer are good, and the batteries are all charged
up. Thank you Mr Kohler. There's some tree damage along the edge of
the creek where we anchored but nothing that impacted us. The
surrounding area (Green Cove Springs, FL) is without power and has
some relatively minor damage.