That depends on what is in your area. Stress preWinter preperation, last minute before freeze over maintenance to prevent disasters in the Spring. A pay me less now than more later concept. My Winter business is as far away from ponds as you can get, it does not have to be correlated, but anything that earns and keeps you busy. Fine tune your skills, study, education and ticket punching, making business contacts. all of the things you should not have time for during peak season.
I like the ice fishing idea. Don't know anything about it, but a great way to get pond owners to get to know you and utilize thier ponds during a perceived off season. Turn that around into one of the best times of the year. And when the ice melts, I'll be there for you. Here's my card.
