Bulls man Kevin Hartley is still missing after five days, and police will stop active searching until the weekend.
Search data would be reviewed over the next few days, police said, and planning would start for the weekend.
"After five days of searching police have failed to find Kevin, despite the enormous effort by all the agencies and volunteer civilians involved," Sergeant Andy Brooke said.
"This has been a very difficult time for Kevin's family and police continue to liaise closely with them."
The 54-year-old was last seen driving a quad bike from Scott's Ferry to the beach last Friday evening. The quad bike was later found in nearby sand dunes.