Mr Erwin, who co-chairs the Helensburgh neighbourhood forum, believes the master plan fails to adequately address traffic congestion around the hill, particularly coach and mini-bus access to the site.

"Honestly, I think we can do better," he said.

Mr Erwin has long been critical of the council's handling of the Bald Hill upgrade, starting in September last year when council staff presented draft plans for an on-site visitors' centre.

The proposal was poorly received, prompting councillors to agree to employ independent consultant Arup to get community feedback and develop the plan.

However, Mr Erwin and several other neighbourhood forum members unhappy with the scope of Arup's consultation conducted their own community survey and presented the results to the firm for consideration.

He said he was pleased the plan highlighted the importance of the hang-gliding operations and the need to retain the site's "bald" character, two prominent themes identified by both consultation processes.

However, Mr Erwin panned suggestions to construct a single entry and exit point via a roundabout along the site.

He said roundabouts should instead be built at each end of the reserve and the car parking area made one-way to vehicles.

He also said the council needed to hold urgent talks with Roads and Maritime Services about upgrading the nearby Lawrence Hargrave Drive/Otford Road intersection.

"What happens at that intersection will directly affect traffic into and out of Bald Hill," he said.

Wollongong councillors will vote at Monday's council meeting on whether to put the proposal out for wider public comment.