I am an instructor up in the NE area and I have been averaging about 50 hours a month. 30hrs Lowest. 80hrs Highest. Since last July I have built up about 700hrs. It all depends on what kind of a student load you have when the slow season hits. If you can maintain a few of your frequent fliers during that time its a little bit more tolerable. If you are having trouble getting students try some light advertising.