A lot of success has been coming out of the Zumbro when the high waters were flowing. My buddies and I use Shrimp (unprocessed and untreated from HyVee) $6 bucks a pound. I like that best because they carry and have that uric seafood like stench to them. I didn’t want to use liver because it would disappear (in fast waters) and get eaten easily by sheep heads and ect.
On the Zumbro dead Fathead Minnows work well too. Typically I catch fish there late around 9PM.
When fishing the Mississippi, again with shrimp, I have really, really good success around 3-6 AM. The bite is non stop. Some times it gets a little bit hard to manage two pole, just a little. Don’t go far from shore as from experience I have noticed them to come close to land during those hours. (: -Night Fishing
Hope my tips help.