Then Walley spotted a third person on the rock through his night vision goggles.
A local man had been asleep on his couch and woke to the sound of the chopper. He spotted the fishermen through his telescope and decided to wade out into the chest-high waves and guide the pair back to shore.
Walley said the man - who wants to stay anonymous - is "a real hero", but the man was modest about the incident.
"I just knew the area so I sussed it out," he said.
He's never seen anyone stuck on that rock before. "It's just one of those bad luck things."
The pair told him they had been facing out toward the sunset and did not realise darkness was falling quite so fast.
St John Ambulance was called but not needed. "They were just very wet and cold. The locals were great, they gave them warm clothes and all was well," Walley said.
The two fishermen, who he guessed were in their early 30s, were "just relieved and tired and...a bit sheepish. They were all offering to make donations to the Westpac Helicopter."