Early ice shore related points. Set up on the soft/hard bottom transition usually around 17 to 20ft and key on the usual inside turns. Really helps to have a gravel bottom. If you have a camera drop it down – if you don’t see perch move. Window can be really tight – usually 1 hour or so around sunset/sunrise. Mid winter move out to mid lake structure. I know that’s pretty general but Tonka walleyes move around and we don’t have the numbers like Mille Lacs. You can’t rely on any spot to produce two or three nights in a row.