A NOOSA mother has written to explain why she wants police to take action against inappropriate nudists at the unofficial nude beach, Alexandria Bay.

The mother, who asked to remain anonymous, said she had nothing against nude sunbaking, but she was tired of being approached by naked "zombies" during her walks on the beach.

Her letter comes as Free Beach Australia has started an online petition to try to get a "legal clothing-optional beach".

"The people of Queensland need a legal clothing-optional beach to enjoy the natural side of nude swimming and sunbaking," it says.

"Alexandria Bay has been used as a nude beach for over a decade. It's the most sensible choice.

"When a legal nude beach it will make it easier to rid the beach of the unwanted creeps and weirdos and make it a nude, family-safe beach environment."

Police were criticised last month after one of the nudists, Ricky William Ross, appeared before the Noosa Magistrates Court on a wilful exposure charge.

Mr Ross pleaded guilty and was given a good behaviour bond, but the arrest and court case prompted an outcry for police to "leave the nudists alone".

Noosa Officer-in-Charge Stephen McReight said police were only acting on legitimate complaints.

"Police take action when complaints arise," he said.

He said since the court case, police had received "half a dozen" letters of support for laying the charges and about two against it.

The mother said naked men who approach women and who are "sitting in the main public pathway exposing their genitals" should not be allowed to do so.

She has detailed her "disturbing experiences walking through Alexandria Beach"

"I am not against discrete nude sunbathing and swimming out of view from the general clothed public," she said.

"But what I have experienced several times passing through Alexandria Beach has been very shocking and disturbing."