Many of the students have now become tutors, passing on their knowledge to young and old.
"The key to our wānanga is self-discipline, self-pride and self-respect," Pouako Eraia Kiel said.
"It's what we teach through this traditional art form, the mou taiaha.
"The taiaha is a vehicle that carries our dreams, hopes and aspirations of our tūpuna and that our culture is handed down to the younger generation. Here you'll see boys as young as 6 come across to Mokoia and they're learning."
Kiel said his son had carried on the family tradition of teaching students on the island.
"A highlight for me is being able to bring my son here and for him to share the same experiences I had as a young boy and to see him now tutoring young kids."
Mohi said the benefits were around positive cultural identity.
"They're about role modelling, they're about how to be a healthy male in a healthy environment with healthy people. It's about keeping yourself safe and it's about all the great things that Māori are."
Ensuring the sacred practice of Māori weaponry lived on was hugely important, with benefits throughout the community.
"We continue the work because we're probably living results of it," Mohi said. "We all have a strong belief that our culture is our way forward. Working with others here on the island and seeing the progress that the young men make ... it's a definite positive and a definite treat for us here."
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