Advy guilds are really the best way to get in touch with other advies. Most islands have one or two, but they are not necessarily in your area. For example, there is one on Dwilight in the Golden Farrow/Eidulb area, and there used to be one active in Corsanctum (not sure if it still is), and one in Fissoa. On BT there is one in the Fronen area. There are doubtless several others.