Jackson can take credit for starting to unlock a vault of talent, which sometimes gave the impression of being Fort Knox. However, their skill levels dropped as the match wore on and the defence became threadbare. Three games in eight days took its toll.
Hawke's Bay's resilience was effective and the strength of their forward pack was matched by the direction of first-five Ihaia West, who kept them on the right side of the territory count in the second half.
Harbour's moves had the precision of a training exercise against ghost opposition in the first half as they linked perfect choreography from the set piece.
Harbour's lineout was the star. Hooker James Parsons' throwing was accurate and Gerard Tuioti-Mariner proved a reliable money man. From such a strong platform, Matt McGahan directed astutely at first five-eighths and his set-up was outstanding throwing the ball wide to openside flanker Josh Blucher who released Matt Vaega for a try.
The hosts scrambling defence was also impressive, even after a bulldozer like Hawke's Bay centre Robbie Fruean broke the line on occasion. The team effort to sandbag against Fruean in the 23rd minute underlined their hunger. Robbie Robinson's earlier ankle tap of West was another highlight.
There were awkward moments midway through the second half. Hawke's Bay scored two quick tries, bringing them back into the game at 25-15. Fruean's effort came from a dropped pass when Harbour had sacrificed any last line of defence and Ellery Wilson also found the Harbour loose trio wanting on the blindside.
North Harbour 28 (L.Devcich, M.Vaega, M.McGahan tries; M.McGahan 2 cons, 3 pens)
Hawke's Bay 25 (B.Edmonds, E.Wilson, R.Fruean tries; I.West con, 2 pens, M.Berquist con) Halftime: 18-3