"I've been fortunate to play in quite a few shield games and to have won some. You've got to be on the ball and play good rugby because the opposition aren't going to lose the game for you, no matter how young and inexperienced they are."
Peter Sloane, who captained North Auckland in 1978 - the last time they won the shield in an upset over the then champion Manawatu side - came to address the team last week, giving them a boost in motivation.
"Shield games are different to normal footy, so the guys now have a better understanding of what it's about and, if we can pull it off, there's going to be a good buzz around in the province," Witcombe said.
Team management have played down the challenge during the pre-season but Witcombe knows there's no better time to challenge for the country's greatest provincial rugby prize.
"It's a good time to try and beat any team early on in the season when the teams don't really know each other and if it pays off, it pays off big," he said.
The coach is satisfied with the team's progress in the pre-season. The Taniwha were defeated by Auckland 37-26 but bounced back to defeat Counties-Manukau 21-17 in their second pre-season game.
By contrast, Waikato have been scratchy in their pre-season.
After two successful shield defences, against Horowhenua-Kapiti and East Coast, they could only scrape a late draw against North Harbour before losing 31-17 to Taranaki last weekend.
But no one in the Northland camp is reading too much into that with some of the champion Chiefs side due to return to their provincial team for the match.
BOTH TEAMS
Northland: 1 Bronson Murray, 2 Ross Wright, 3 Scott Vessey 4 Tom Murday, 5 Bryce Williams, 6 Dan Pryor, 7 Jack Ram, 8 Jake Paringatai, 9 Sonatane Takalua, 10 Ben Seymour, 11 Mateo Malupo, 12 Derek Carpenter, 13 Rene Ranger, 14 Whiria Meltzer, 15 Matthew Wright. Reserves: 16 Robbie Abel, 17 Justin Davies, 18 Owen Pihema, 19 William Whetton, 20 Mac Sykes, 21 Daniel Hawkins, 22 Warren Dunn.
Waikato: 1 Toby Smith, 2 Brayden Mitchell, 3 Paul Alo-Emile, 4 Brian Alainu'uese 5, Sam Kilgour, 6 Rory Grice, 7 Jack Lam, 8 Adam Burn, 9 Kylem O'Donnell, 10 Sam Christie, 11 Joe Webber, 12 Jackson Willison [c], 13 Save Tokula, 14 Tim Mikkelson, 15 Trent Renata. Reserves: 16 Vance Elliott, 17 Latu Talakai, 18 Chris Middleton, 19 Jono Armstrong, 20 Mick Snowden, 21 Joe Perawiti, 22 Semisi Masirewa.