What are some things you do to keep your practice rolling during a slow season? Do you save your money are prepare? Do you have an additional source of income? Do you have retail?
I have found that even in a slow season there is always a target market you can go for. Just observe your community and focus on a group of individuals or interests. Example: It's summertime and people are outdoors enjoying the weather. What kind of outdoor activities are people participating in your area?
Allow a sport or an activity to become your target market. Or, think of the people stuck inside working on computers. Maybe put together an educational class on posture and how massage can help with stress, work strain and mental production.
Just get out there and see that there is a market for massage everywhere!