The Port Macquarie retired police prosecutor of 33 years said he has performed 30 rescues in 17 years at the beach, and current signs were too difficult to understand.

Englishman Hugo Palmer and Frenchman Erwan Ferrieux went missing from Port Macquarie's Shelly Beach earlier this month... their towels, keys and glasses were found next to a beach boat ramp.

A major search operation was conducted over air, land and sea until it was scaled back on February 20. A community gathering was also held to show support for their families.

Mr Corr said the solution to further rescues was a clear, visible marker indicating where it was safe to swim.

"The main pool (in front of the car park) is safe, there should be a sign at the rocks (to the left) saying 'dangerous do not swim beyond this sign'," he said.

"It would cost them bugger all to say, it is safe if you don't go past this point... all these other signs take an hour to read."

Mr Corr said another option, a sign showing the number of deaths or missing people at the beach, might scare visitors from the beach.

Mr Corr was one of two men to receive a 2018 Australian Commendation for Brave Conduct award for rescuing a badly injured woman at the beach on March 10, 2017.

"If I'm here and something happens, I'll go in," he said.

"There are three different currents at the beach, and people don't realise at middle tide there's a big drag on to pull people out.

"Many people end up swimming against the current and tiring out. My advice is don't panic, just float and put your hand up."

Police are still appealing to anyone who might have seen Mr Palmer or Mr Ferrieux or their car, a rented silver Commodore station wagon near the Shelly Beach car park or in the surrounding streets, to contact them.

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