They had the better of the first half, scored a fine opening try, the ball shifting through several pairs of hands before Nafi Tuitavake crossed the line, and have backs such as Tuitavake, Francis Saili, David Raikuna, Cory Aporo and perky halfback Bryn Hall with the pace and skills to worry opposing teams this season - providing they get quality ball in the right situations.
It took Waikato time to get their lines right. Once they did, a combination of strong running, cohesion and self belief - helped, it should be added, by moments of meek defence - was more than sufficient to get them a bonus-point victory and sets them up for another impressive campaign.
You won't find his name on the scoresheet but lock Chris Middleton got through a power of work, captain and No 8 Alex Bradley was an influential figure, while Jackson Willison, Tim Mikkelson and Kerr-Barlow were incisive figures out the back.
"Our defence was lacking. Both backs and forwards were leaking tackles. They were getting good gain line and it was hard for us to stop their momentum," Harbour co-captain Ben Afeaki said.
All true, but Harbour showed enough that once they come up against fellow second-tier championship sides they should be in business this season. First though, there's defending cup champions Canterbury in Christchurch next Saturday.
Scorers:
Waikato: Tim Mikkelson, Toby Smith, Tawera Kerr-Barlow, Alex Bradley, Brendon Leonard, Kalem Chan Boon tries; Trent Renata 2 pen, 3 con
North Harbour: Nafi Tuitavake, James Parsons, Brenton Helleur tries; Michael Hobbs con, Codey Rei con, Luke Devcich pen HT: 11-7