"Ray Cameron told us if we won the battle of the boards we'd win the game but we never quite managed it. Waitakere showed what a good rebounding team they were and won that particular duel," McIlroy said.
The match got physical as the Suns closed to within seven points during the final quarter and McIlroy said their offensive depth let them down.
"It was a big learning curve for us and next year we know we can't rely just on two players scoring our points, we have to strengthen our offence," McIlroy said.
"But we've raised the bar now and on the bus back to Whangarei we were able to reflect on what a journey it's been. It's been a great year and now the challenge is to improve on it and win the final next year."
Northland Suns Basketball Development Trust spokesman Edwin Popham said the charitable trust is also keen to keep the ball rolling.
He said even before the team stepped out on to the court on Saturday they were winners - far outstripping even the most optimistic estimate of their chances at the beginning of the season - after finishing last and second to last in the two previous seasons.
"Old time basketball supporters have been coming out of the woodwork to show their support recently but perhaps even more importantly some of the elite players up here have approached us to show interest in playing so we're hoping to have an even stronger squad in the competition next year."
The players will now get a break for the rest of the month before the Whangarei Super-Six competition gets underway on November 2.