I wouldnt go past medium. Smelt there are small. If you want salmon trolling id go up 10 exits...thats rough with the derby. Its a ghost town in December and thats when I like to go before ice up after the lakers spawn.
Also the lake will not have flipped yet so I wouldnt fish super deep or shallow. If you can mark the thermocline on your finder you want to troll where that thermocline meets structure.
