At the time the group were from all different areas of Aotearoa.
To help make up numbers they had to look far and wide to recruit members because they had no men.
Nanny Hine said they even went to prison.
"They let us have a van load of boys to come down and practise, and they brought an officer with them and took them back each time so we were able to actually have a haka team," Poa said.
Adam Langford was not originally a member and came along to watch his wife perform during training.
But despite being an Englishman from Lancashire, he was soon adopted into the rōpū.
"Aunty Dovey Katene, you know she came over and said Adam come on get up 'but I'm not a Māori', she said when you come here you are Māori, get up. So I've been getting up ever since," Langford said.
Heemi Kara praises the founder Jock McEwen and Dovey Katene for their originality in creating waiata.
But he said despite advances with kapa haka, it's now too professional for his liking.
"It's Māori in another cloak, we're talking about originality, today it's showmanship," Kara said.
He prefers kapa haka sticks to tikanga without all the acting like it was in its heyday.
Next year will be their 50th anniversary since winning and although they sit between the ages of 80-90+, they remember the waiata they sang that day well.
They also performed at the Sydney Opera house, and that same year they won.
But behind the scenes, it was dire, a time when Māori were coming out of an era of being strapped for speaking te reo at school.
The year before Māwai Hākona won the national Polynesian Festival was the year the Māori language petition was delivered to Parliament.
At that time the three of them say that kapa haka and te reo Māori has come a long way but there's still lots of mahi to be done.
Hine wants every school to have a Māori tutor to help grow the language.
"You were lucky if you had one Māori tutor in a school and they had to do the whole school, whereas now you've got so much more choice, but we don't have enough te reo Māori speaking people to choose the best we can to further the reo," Poa said.
- RNZ