Appleton on the Mississippi is a popular place. Most of the guys with motor boats will zoom downstream to who knows where. I just fish around the launch in either my canoe or float tube. This time I had my canoe as the bloom is up along with the weeds. Lots of pan fish of all kinds and the odd SM. Best fishing is in the evening.
There are also some wading possibilities above the dam but I don't see people there anymore. "The Old Trout" (you have to be an old timer to know who that is) told me years ago there were a lot of very large bass below and above the rapids. I think there is only perch and the occasional small bass in there now but always worth trying. Great looking water! And easy to wade.
A couple of days ago I was elsewhere on the Mississippi and got my first walleye of the year as well as losing a fair sized bass of some kind. It is strange to me that all the good looking bass water along the Mississippi isn't just filled with bass. There are not than many fishers. Without any hatch, my go to fly is the Mississippi Maiden. Basically a cone head, with palmered plastic green chenile body and a brown or olive maribou tail. A good trick to get the chenile to "behave" is to dip it in hot water and then shape it sloping back.