Defending NWFA title holder Forth remains on track for another flag after finishing the roster series as the minor premier with an unbeaten run of 16 matches.
The Magpies head into the semi-finals in a fortnight unruffled after accounting for the second-placed Wesley Vale by 60 points in front of a crowd expecting a closer result.
Forth led at every change although their inaccuracy to half-time kept the contest alive.
Whatever chance Wesley Vale may have had dissipated in the third quarter when a succession of goals from brothers Claye and Wade Symmons, Nick Morgan and Adam Flannery, was to be the springboard for an emphatic 16.16 (112) to 8.4 (52) win.
Two other finalists, Motton Preston and Turners Beach, were in no mood for complacency, when for the second time in as many weeks, they trounced their respective opposition.
Motton Preston’s clash with Wesley Vale in next weekend’s qualifying final is likely to be considered in a different light after the Demons kept Spreyton scoreless to win by 115 points.
It was an even better outcome for Turners Beach, when Nicholas Gregson steered them to a 28.25 (193) to 3.3 (21) triumph, courtesy of his 11 goals.
West Ulverstone were left holding the 2017 wooden spoon after Rosebery Toorak had some compensation for narrowly missing out on the finals with a season-ending 44-point win.