In So Cal next to the coast some of our best flying weather is in the fall & winter. Between daylight savings ending (no night ops at the airport) and getting dark earlier I would lose two flights a day during the winter months. Also, every year from November to January student load would drop in half due to the holidays and tax time.
To supplement the losses for night I would do ground ground school. I also had four busy airports near by where I had clients. I never had to advertise much, after I was teaching full time for a year to two it was all word of mouth. I would just get phone calls for work.
