Well there are multiple ways to skin a fish. Many charters moved out of Chicago because the distance you need to cover. But most of these charters run boats that are only capable of reaching 16-18 knots. Now take a boat designed for the ocean that travels over 40 knots, better fuel economy, and less fishing pressure.
Now if you lived in Chicago, why would you waste gas, drive over an hour each way, just because it gets deeper quicker on a slower boat.
I'm sure if I lived by Northpoint, I would charter a boat out if Racine.