The Thunder have reached the decider on the back of an undefeated season while the Vipers have been forced to earn their place the hard way.

Crescent Head finished the regular season in equal second position, but dropped to third based on for and against.

The Vipers have survived two elimination finals to reach the big dance. They first fended off Natureland Storm before they outfought the South West Rocks Corals last week.

The Vipers, who have claimed the one premiership back in 2000 in their 29-year history, are desperate to lift the trophy for a second time.

"It's been 19 years since the club last one a grand final and we are excited to hopefully break the drought," Vipers captain Julianne Petterson said.

"All of our games with the Thunder were close during the regular season so we are confident we can get the win.

"We will go out fast and eager and try and get an early lead. We don't want to be chasing points late in the game."

However, there's a reason the Thunder are perfect heading into the last game of the season and they won't be changing their game plan.

"We will go in and do the same thing we have been doing all year, stick to our winning formula and not do anything different," Thunder captain Shellie Morrison said.

"We are lucky we have got a good combination of youth and experience and it has helped us play well all season.

"We have height up front and at the back and it allows us defend and shoot well. Our shooters in particular have developed into two young great players this season."

Morrison also credited Natureland president Sonya Murphy, who dedicates a lot of her time to the Macleay Netball Association.

"While Sonya is our president she wears lots of different club hats every week as she helps everyone out," Morrison said.

"She puts in a lot of hard work on and off the court and makes sure everything is working smoothly."

Petterson also expressed her gratitude to the association for a terrific season.

"The season has been so well organised by the association and we can't thank them enough for all the work they put in," she said.

The Division One grand final begins at 3pm.

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