I just got off the phone with a friend of mine, her son is a PS for one of the a ice fishing teams. They were in N Mn last weekend, over 1500 holes drilled by 6 guys on numerous lakes, and they could not find the fish over a 3 day span. And these were lakes that normally they can easily get on the fish.
So I'm not sure if the warm weather pattern this fall has them screwed up or what. But hearing the above was simply jaw dropping.
I do know that guys in IA were on the Perch and 'Gills as I saw the photos the other day.