Shallow reefs on Winnebago are your best bet. Not likely you'd get one in the river, but not saying it's impossible.
Fox River Appleton Shore Fishing, Outagamie County
Fritze park has a decent area for fishing with an old train track bridge they turned into a walking/biking trail, Lutz park gets you right on the river, the damn across the street from Theda Clark Hospital in Neenah has produced walleyes at the right time of year, Jefferson park in Menasha is on the lake, the Rocketship park in Neenah has all kinds of shore both on the lake and in the bay. PM me if you have questions or are looking for a specific area. I spend 30+ years in the Fox Valley.