I would go around to all of the nearby businesses and introduce myself. Ask to leave a small stack of business cards in a high traffic area/lobby. Ask to put a sign up in the break room for a meet and greet at your location or nearby park. Things like that or other things. Free introductory session? Free registration? A sign up sheet for a new group with a focus like weight loss, improved balance, HIIT,etc.\\ What is your current favorite training format? And carry business cards everywhere you go and give them to everyone you talk to and meet.