A goal to Jordan Greenaway in the last two minutes of the game saw minor premiers Sharks move through to the Manning division one men's hockey grand final with a hard fought 2-1 win over Tacking Point Thunder in the major semi-final.
Thunder will now play defending champions Chatham in the final on Saturday.
Sharks captain-coach Bailey Pitman said it was probably his side's worst performance of the season.
"It was the most stressful game I've played in,'' Pitman, who is in his debut season as captain-coach, explained.
"The windy weather made the conditions really draining and it was a scrappy game from our point of view. We just couldn't seem to get going.
"But it is something we can work on going into the grand final.''
Sharks took an early 1-0 lead and maintained the advantage going into the fourth quarter. However, the Port Macquarie combination hit back with a goal to level the scores.
Just when overtime seemed inevitable Greenaway beat the defence to post the winning goal.
Pitman said Fletcher Pearce was outstanding for Sharks in all aspects of the game.
"Our goal keeper, Marcello Castro was great as well. He kept us in the match.''
Sharks will be aiming to win the club's first men's division one premiership this century in the grand final on Saturday September 21.
"Chatham's won the last nine (premierships), it's about time someone else had a turn,'' Pitman said.