10 to 12 inches pretty much everywhere. Trucks have been out there almost 2 weeks now, but there are some pressure cracks that do travel across the bay. Some of the pressure cracks are heaved up pretty good right now, saw one yesterday that was about 3-4 feet high. I'm not sure as to the exact location you are thinking about, but I would go out from the nearest access point first and see if there are any pressure cracks that will/could stop you from getting to where you want to be.
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Captain Ken Lee Sall-Mar Resort / Bay de Noc Charters