I have musky fished Halloween weekend up around the Ely MN area for the last 6 years. A few tricks learned from the MN diehards (brother and friends) I fish with are. Buying liquid silicone and spraying your spool the night before, will help for a while in the cold mornings. We carry a spray bottle of windshield fluid and spray the spool as needed to thaw the line for casting, The can use both for the trolling motor also. These work in the high 20's and low 30's temps. When you start getting about 22 deg and under it is just trolling if you really want to be out there. Note this is with Power Pro line, have no idea if would work well with mono. The fish in avatar was caught in about 30 deg temps