I was hoping for a little more sense of security here. If you know Michigan's west coast, there are lots of sand dunes just off the water and they can be pretty high. Ship (or bobbing person) to shore does not sound likely. At least I would have some ship to ship communication.
Rely on self rescue.
I'm convinced solo sailing a beach cat can be as safe as taking a shower. It's just that we usually sail in a social setting so the self rescue procedure has not been well thought out.