Tukapa started the match the better of the two sides and dominated territory and possession for most of the first half hour.
However, poor decision making and an inability to turn key attacking moments into points cost Tukapa badly, especially after Daniel Waite intercepted a long pass and ran 80m to score under the posts.
Tukapa then had a golden opportunity to take back the lead as they attacked the Old Boys line but a loose long pass found replacement flanker Hayden Patene who ran 40m before finding wing Michael Rubick who had too much pace for the chasing defenders.
Buoyed by those two tries, Old Boys ran the ball from deep inside their half with impressive halfback David Ormrod finding fullback Logan Rei with a miracle pass before he ran away from the defence to make it 21-6 at halftime.
Tukapa would have been almost shocked to be behind by such a margin, although they could have closed it throughout the first 40 minutes had they not missed several shots at goal.
The second half was more scrappy as the hot conditions told on the players.
It did not affect replacement halfback Te Toiroa Tahuriorangi, though, as he set up a couple of tries to blow the score out before Pomare Samupo scored an excellent consolation try for Tukapa.
Old Boys captain Caleb Mawson was not entirely satisfied with the win as he bemoaned the lack of intensity they showed in the first half.
“I think we were off the pace and didn’t really have any ball but a few runaway tries and we managed to turn with a good lead,” he said.
“The second half was a bit better but we still have a lot to work on.”
Mawson said they continue to strive to play an expansive and positive game and Rei’s try showed what they could do if things clicked for them.
Elsewhere, Coastal caused a bit of a shock after they thumped Clifton 53-3 at Rahotu.
Clifton had been impressive the week before when they thumped Tukapa but they had little answer to the intensity Coastal brought to the match.
Coastal second five-eighth Johnny Fa’auli had an outstanding game, scoring a hat-trick of tries while also being prominent on defence along with centre Thomas Watt.
Coastal coach Aaron Fisher said it was a pre-match plan to put defensive pressure on Clifton’s inside backs and he credited Fa’auli and Watt for the way they did that.
Fisher was also delighted with the patience they showed on attack and their overall option taking.
Clifton coach Brad Cooper said they simply showed up without the necessary intensity and were beaten in all areas of the game.
The only bright note for him was the performance of lock Matt White.
Southern remain the only other unbeaten team after they beat Stratford 29-23 at Stratford. They did, however, need two long-range intercept tries to get the win.
It was an ugly win in the eyes of Southern coach Jason Skipper who paid tribute to the performance of Stratford who managed to put them under plenty of pressure.
Skipper thought fullback Sam Lawson was one of their best players along with flanker Danny McDonald.
Stratford’s best players were blindside flanker Simon Bailey and lock Hamish Walker.
Inglewood’s frustrating start to the season continued after they lost 36-33 to Spotswood United at the TET Stadium.
Spotswood United were well behind at halftime but scored five tries to one in the second half to grab the five points as their performance improved after they struggled to adapt to the new breakdown laws in the first 40 minutes.
Former Japan international Bryce Robins made a big difference to the Spotswood United backline when he came on in the second half while prop Jared Proffit’s overall work rate was impressive.
Inglewood co-coach Cole Brown was delighted with the way they moved the ball in the first half but was unhappy with their lack of discipline and match fitness in the second spell.
He thought they were “out-muscled” up front where they struggled to counter Spotswood United’s lineout drives.
No 8 Hayden Keeling was their best player while the midfield pairing of Ben Leng and Blake Hohaia had strong games.
At a glance
NPOB 36 Tukapa 14
Coastal 53 Clifton 3
Southern 29 Stratford 23
Spotswood Utd 36 Inglewood 33