Re: Build it They Will Come...Or not
Agree with setting up a facebook page. You can target posts to all members within an area who list "martial arts" as an interest (not sure about cost}
Leaflet drops work but can be costly - my dojo distributes 5,000 three or four times a year and we probably get 20- 25 students from that (about 1/1000 strike-rate)
Also promotions such as free classes (pay for 5 get 6 for example) or 1/2 price memberships in January.