This is the time of year when ice fishing begins in earnest. Imagine this: a brutal winter in Minnesota, 35 degrees below zero, winds howling. And there are 30 men pulling a seine fishing net a mile long and 12 feet deep by hand under the ice. Curt Piechowski is one of the last surviving members of a hardy Polish immigrant family that developed that thriving business. Also in this episode: the John Beargrease Sled Dog Marathon.