Owen Kendall and Bailey Smith and Brad Kendall and Campbell Irvine won for the Mount, with Jason Madden and Dave Enright and Mark Hughes and Hayden Beard halving their matches.
Smith said with the heavy frost delaying the start, it was vital to win holes early.
"Nine-hole foursomes changed things significantly and gave you no time to recover if you got behind early. Alternate shots over half the course meant it was over quick."
Both Kendalls, Owen and Brad, grabbed decisive singles wins, with Owen beating Tauranga's Richard Craven 4 and 3 and Brad, at No1, exacting revenge on Tauranga's Eddie Burgess for last year's playoff loss with a 3 and 2 victory.
"We owed Tauranga one from last year and Brad was one guy who wanted redemption and got it," Smith said. "As bookends at opposite ends of the order, Owen and Brad were superb."
Jason Madden was all square with Ben Shanley playing the last, a tricky 210m par three into a stiff wind.
"Once again Jason came to party. It was so cold and windy guys were hitting driver into the 18th and Jason put his in the middle of the green and two-putted for par, while Ben missed left and didn't get up-and-down, leaving us needing a half from someone else to seal it."
Karl Knedler, John Waretini and Blair Murdock gave Tauranga a glimmer of hope with wins but No4 Mark Hughes rammed the door shut, fighting back from 2-down at the turn to beat Hayden O'Donnell 3 and 2 with a barrage of late birdies.
Kawerau won the senior A division 5-4 over Tauranga and will now lodge a challenge to play Whakatane, who finished bottom of the championship division, at a neutral venue for promotion.
Omanu won the silver ladies pennant in a tight tussle with Mt Maunganui at Tauranga.
Bay of Plenty pennant finals (Taupo):
Senior B: Foursomes - Te Teko 2 Lake View 1: Singles: Crete Wana def Dave Sanders 7/6, Mark Selway def Paul Andricksen 7/6, Luke Robinson lost to Dion Te Puni 1-down, Susan Lines halved with Mike Ryan, Warren Selway lost to Chris Posa 2-down, Ross Revell lost to Houston Te Puni 4/2. Sudden-death playoff: Te Teko's Luke Robinson wins 1st playoff hole.
Junior: Foursomes - Hinehopu 2 Opotiki 1. Singles: Max Edkins def Paul Wilkinson, Pat Kaitira lost to Tawhara Kurei, David Caulfield def Mana Howe, Te Hau Hohepa lost to Keanau Howe, Noel Gardiner def Barry Swanson, Andrew Dyball lost to Michael Codlin. Hinehopu win 5-4.
Intermediate: Foursomes - Omanu 1 Springfield 2. Singles: Alan Williams halved with Ron Kusabs, Wayne Rasmussen def Oliver Stacey, Gary Brown lost to Jimmy Maguire, Mark Coysa def Matt Simpkins, Kerry Allen def Leigh Dragovich, Ant Palmer def Brent Frew. Omanu win 5 to 3 .
Senior A: Foursomes Kawerau 2 Tauranga 1: Singles (Tauranga names first): Jack Tisch def Zane Rangihika 1-up, James Cannon def Eru Osbourne 4/3, Toby Pudney lost to Glenn Tait 1-down, Ollie Coxhead def James Hunt 2/1, Jason Ornberg lost to Hemana Waaka 3/2, Andrew Wilson lost to Jordan Rangihika 5/4. Kawerau win 5-4.
Championship: Mt Maunganui 3 Tauranga 1. Singles: Owen Kendall def Richard Craven 4/3, Dave Enright lost to Karl Knedler 5/4, Bailey Smith lost to John Waretini 1-down, Jason Madden def Ben Shanley 1-up, Mark Hughes def Hayden O'Donnell 3/2, Campbell Irvine and David Feeney all square, Hayden Beard lost to Blair Murdock 1-down, Brad Kendall def Eddie Burgess 3/2. Mount Maunganui win 7 to 4 .