Or you can go with one of the propane fired ones as is found in Cabelas. They'll hold a little more, the heat is adjustable and they'll finish the job a little quicker than the Big Chief.

Luhr Jensen makes an insulated cover specfically for the Big/Little Chiefs. That would help in cool/cold weather.

Personally, I would stay away from the top load. Much easier coming in from the side to check on things and make adjustments as needed.