I would not expect them to use MARCS. Coverage out there is horrible. I don't even think there is a MARCS site actually in Ottawa Co. I think the closest is just over the border into Sandusky Co, and one in Erie Co, pretty sure Castalia. That's not going to work on the islands. The Ottawa Co system had some weak areas out there, and they have a site in Lakeside, near the water. So getting MARCS to work from ~10 miles further away is ludicrous.