The airstrip is in regular use, mostly in the summer. The island has 79 vacation homes; some of the home-owners fly in.
Wikipedia says the airstrip is unpaved grass; and in fact there are no paved roads on the island. There's a school, a town hall, and at least one church. There's an underwater power line leading to the island.
Apparently the best way to get heavy stuff there is to wait until the lake freezes over ...
The residents have a Facebook page.
https://www.facebook.com/groups/31936991742/
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Michael B.