Try advertising at local tack shops in the area, most will have bulletin boards or send out mailers. There is a PetSmart/State Line Tack in Ocala as well (State Line Tack is the horse supply portion of PetSmart). You could also try advertising in equestrian magazines such as Horse and Rider, Horse Illustrated, etc. Check the phone book for local stables and/or equestrian centers. Good luck!