General manager Sean Haylan said despite offering children free entry vouchers online during February, last week was a particularly quiet one, with only baby boomers turning out in the rain to venture along the 1500m rainforest walk.

The Illawarra Fly generally provides breathtaking views from the treetop walk that allows visitors to stroll through the canopy 25m above the forest floor, or climb above the trees on the spiral staircase to the 45m Knight's Tower. But recent mist and cloud cover has obscured the view.

Mr Haylan said while most people stayed away on wet, rainy days, older, more seasoned travellers were not fazed by the wet weather.

"The weather doesn't worry them much," he said. "On the weekend one Sydney visitor wrote 'absolutely wonderful, even on a misty day'."

Mr Haylan said his greatest challenge was now to convince young people to visit on wet, misty days so he could reverse the recent fall in numbers.

"It is a really interesting experience in the mist and rain," he said. "You get to see the really nice colours of the rainforest.

"I went back through our records and this is definitely the heaviest rain we have had in such a short period of time. So far this month we have had 283mm in nine days."

That compared to 145mm last February.

Mr Haylan said the ongoing challenge of working in tourism was in finding new ways to reach people.

He said that was why the Knights Hill attraction was becoming involved in the South Coast Real Adventure joint promotional initiative with Jamberoo Action Park, Skydive the Beach and Dolphin Watch Cruises, who were all marketing themselves at www.southcoastrealadventures.com.

"It is good to work with the industry to try something new and interesting," he said.