"He wasn't on there [the field] directing. We scored one try while he was off, but it was more that his team went off [the boil] because there was no one directing.
"[Whereas] our team went to plan and did really well sticking to the game plan."
The win means Takahiwai won't need to travel to Kaikohe next week and play-off in the minor semi-finals, giving their captain an extra week to recover from a hamstring injury.
Hool said stand-in captain Hori Tuhoro stepped up to fill the gap, with prop Naphtali Pumipi and halfback Cole Tarau also standing out.
In other Rugby League Premiership results; Muriwhenua beat Otaua 38-26, City easily won against Hora Hora by 68-16, Hokianga were victors over Kerikeri 48-4.
The results mean Moerewa claim the Minor Premiership.
Semi-final action at Lindvart Park, Kaikohe, July 27.
Hikurangi vs. Northern Wairoa, 1pm.
Hokianga vs. City, 3pm.