Lake Michigan Chicago, IL marinas?
Racine is my home port. The "...way too many powerboats which love to speed through the narrow channel, I''d avoid it." Is a bit harsh & I don''t see this happening. BIG improvements in Racine over the last few years and as I understand it there is alot more coming. All of it will be within walking distance.
Best tack might be to look over all the harbors mentioned here, weigh out your plusses & minuses and take a leap of faith.