The two-time Olympian said the ageing sand-based surface at Prince of Wales Park would impede development, and prevent youngsters from competing at higher levels.

"It does hinder you a bit with what you're doing," she said.

Hudson said a water-based facility, which could cost around $750,000 and is rare in country centres, was the critical in advancing players up the ranks.

"It's what you need to take a step forward."

However, Hockey Ballarat president Sue O'Brien defended the 11-year-old surface, saying it met the needs of its 450 registered players.

"At the moment, we're concentrating on our junior development programs, and establishing competitions for our juniors in all of the age-groups so they can develop at their own rate," she said.

She added Ballarat's strong presence in representative teams indicated players were capable of adapting to varying conditions.

"The ball runs differently and pulls up a lot quicker (on water-based) than on sand, so the skill level needs to be refined," she said.

"But Ballarat currently has five kids in state teams, so, for those that are really committed and what to participate at the highest level, the opportunities are there, and they are capable of adjusting

to their game," she said.

Ms O'Brien said the facility would be replaced in five to 10 years, but could not say what form it would take.

"Water-based is certainly the best facility there is, but the technology might have changed by then. We'll decide when the time comes what the best use of the money is given the size of the competition

at that time."

Ms O'Brien said junior participation in hockey had grown in the past two years, and created the demand for a new under-12 mixed competition.