Where is Silver Shoals and that island? I actually looked it up and Seaward Shoals was called Silver Shoals before by Jim. North of Vanhoover looks to be a candidate then I suppose if that is the case unless they make it a separate town. I mean the maps don't match fully match but seems close enough for a background prop. Though that little island is new.
https://twitter.com/TheBiggestJim/status/782780332873359360