In addition to trout fishing in north and central Wisconsin, there is excellent smallmouth bass fishing in rivers. You can float rivers in your pontoon or a rented canoe, or you can wade rivers and catch some big smallmouth bass. Many of the rivers that hold smallmouth bass also hold muskie and northern pike. The smallmouth fishing often peaks in mid to late late summer, when the trout fishing can slow down. Here's a link to an article that talks about Wisconsin smallmouth rivers.

http://www.wisconsinsportsmanmag.com.../wi_aa086004a/