Tristan Headrick, 19, power-washes the bottom of the Happy Fish power boat at the Toledo Beach Marina in LaSalle, Mich., to get it ready for winter storage. Mr. Headrick said Monday he normally works on automobiles, but he recently obtained a job working on boats. He might be just in time — forecasters are calling for a 40 percent chance of rain or snow showers Saturday with the high only in the upper 30s.