The Demons got on top late for a 37-34 victory over Coolamon in an enthralling preliminary final at Robertson Oval on Sunday.

The win puts Collingullie-GP through to another grand final appearance, where they will meet Mangoplah-Cookardinia United-Eastlakes at Narrandera Sportsground Stadium.

Collingullie-GP head coach Jemima Norbury believes there is still a lot of improvement within the A grade team.

"I still think by any means that it wasn't a perfect game (on Sunday)," Norbury said.

"It was a really good, tough, hard-fought game, which is exactly what we needed.

"There were areas where we needed to improve from our game against Mango and we did that. We showed a lot more fight, when Coolamon got a roll on we didn't let it continue. It was good to have players stand up and stop that momentum."

Little separated Collingullie-GP and Coolamon throughout Sunday's sudden-death final. There was rarely more than two goals between the two teams, before the Demons edged clear late to keep their premiership dream alive.

Shooters Hannah Finemore and Flynn Hogg withstood a lot of physical pressure to play instrumental roles in the win, while Brigetta Hart had a superb game in defence.

After finishing minor premiers for a fifth consecutive year, Norbury believes Collingullie-GP are better positioned to break through for a maiden Riverina A grade title.

"We're excited...to try and break the curse," she said.

"We've made a lot of changes this year, within the club, about commitment to training and changes to the way we're coached. We've got a coaching board as opposed to individual coaches in grades, a joint effort within the club.

"It means there has been a little bit more commitment to training, we're stringent on you having to train to start the game and there has been a lot more fighting for positions, which has been good."

MCUE proved too good for Collingullie-GP, 63-46, in the second semi-final, just a fortnight after the Goannas won a final round clash between the two by six goals.

Norbury believes the start of Saturday's grand final will be crucial to her team's chances.

"I think it depends on how we start in all honesty," she said.

"They got six or seven goals ahead in the major semi in the first minutes and then we fought for the next 55 minutes so I think it will depend on how we start."

It will be a big grand final day for Collingullie-GP, who also have their A reserve and C grade teams through to the grand final.

They, along with Turvey Park and Wagga Tigers, will be the most represented club on grand final day with four teams in action across football and netball.

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