The search involved more than 250 civilian volunteers on Saturday and 63 on Sunday — which equates to about 1850 and 530 search hours respectively.
This was in addition to the Search and Rescue, military, Rural Fire and Red Cross volunteers.
The Santoft Forest and beach areas have been searched extensively in both directions from where the quad bike was left but still nothing of interest has been found.
Brooke said police will be limiting ongoing searches from now on but the investigation continues.
The search and dive squad deployment was hampered last week by bad weather due to Cyclone Gita.
Searchers have been concentrating on the area north of the bombing range, but have also been searching the forest area, shelter belt and sand dunes.
Police have concerns for Hartley's wellbeing and would like to hear from anyone who saw him in the area on Friday or during the weekend.
Anyone with information that might help find him is urged to contact their local police station.