Pompallier College student Kinita also claimed gold, winning the U15 94+kg class.
More-Thompson picked up personal bests in the snatch (56kg), clean and jerk (76kg) and total weight lifted (132kg) on his way to the gold medal.
Kaipo meanwhile also struck personal bests in the three categories with a 53kg snatch and a 63kg clean and jerk, giving her a 116kg total for the day.
While Kinita didn't set as many personal bests as More-Thompson and Kaipo, his performance was no less impressive.
With a personal best effort in the snatch at 62kg, Kinita had a 78kg clean and jerk on his first effort before failing to hit his last two marks.
However the two efforts he put on he board were enough to take out the division.
The large audience showed a lot of appreciation for the skill on show in Whangarei.
On top of the Northland success, the crowd were also on hand to witness a New Zealand Youth record lift.
Avondale College's Kanah Andrews-Nahu, after nailing a 100kg clean and jerk, lined up 105kg and to the joy of herself and the crowd she nailed the lift.