If I were going to go the route you're going, at least put some fuel stabilizer in your fuel. Let it settle in, then run it for a little bit so the fuel that is left over in your fuel system (filter, carb bowls, carb high speed jets) has been stabilized -- this will prevent gumming and damage. Your fishing trips in colder weather are much fewer and far between than in warm weather. At least you won't have to worry about a fuel-related issue.