A 14 goal haul from Mount Compass key forwards Tom Pinyon and Ziggy Vitkunas paved the way for the Dogs to defeat Victor Harbor in the first semi final and move in to the preliminary final.
The powerhouse forwards could not be stopped and proved to be the difference by the final siren.
Victor Harbor started the better with Sam Basham proving to be a problem for the Dogs and Schubert finding the football.
But it was obvious early that when challenged, the Mount Compass unit would respond with Pinyon and Vitkunas being the targets. Pinyon booted two for the term and Vitkunas one, while Basham kicked two for the Roos and Davey a goal. It was Compass by three points at quarter time.
The second term was all Victor Harbor, as they kicked away. Alleway was right on top and kicked two majors, followed by Ross, Schubert and Basham.
It was all the Roos and an upset was on the cards, but Mount Compass fought back with goals to Pinyon and Vitkunas. At half time it was Victor Harbor by nine points and the lead should have been more.
With the door open, Mount Compass burst through and showed why they have been the pace setting club for the past five years.
Hoban took charge in ruck and Hunter and Copestick had the ball on a string. Victor Harbor struggled to get their hands on the football, but unfortunately it was in this term that the umpiring became very inconsistent.
The whistle was blown incessantly and the Roos were on the wrong end of the decisions, which caused great frustration for a team that was proving to be more than a contest for the Dogs. What was paid at one end was not paid at the other and Mount Compass rode their good fortune to kick 8-3 for the quarter to Victor Harbor's three straight goals.
The margin had blown out to 24 points and in the last term Victor Harbor mounted a charge with goals to Wade and Bartram, but the Dogs like the great team they are, bounced quickly with goals to Pinyon, Vitkunas and Michael Corbett to seal the game and a date with Willunga in the preliminary final.
The final margin was 25 points with Pinyon and Vitkunas both kicking seven goals in a dominating display.
They were Compass' best, along with Copestick, Hunter, Camac, Hoban and Tom Corbett.
Best for Victor Harbor were Connors, Bartram, Williams, Ross and Lang, who had the tough task of taking on Ziggy Vitkunas for the day and took many solid hits.