If you have a strong west / northwest wind, and you are willing to trailer to Michigan's Sterling Park, there is good walleye fishing there too, pretty much year round. In May the fish should still be in fairly close to shore, so you can get to them with those winds. Just like over at Port Clinton, they have to go out farther as the season progresses. As usual, ask the locals for timely info on where. You may also consider the lower Detroit River. It is a great walleye fishery, but a different kind of fishing (lots of current).