He is also national director of the scout photography school.
"I just enjoy working with young people," Mr Randles said.
He spent 20 years in the Royal New Zealand Air Force before retraining as a teacher.
But despite his many hats, he said all his activities seemed to tie together in one way or another and feed off each other.
"I think the main thing is I enjoy the outdoors."
His busy schedule involves a lot of evening and weekend voluntary work.
"There's not a lot of downtime — if you talked to my wife, she'd say I'm never home."
His nomination acknowledged the sheer amount of time Mr Randles put into helping his community.
"There is hardly an evening or a weekend goes by when Kevin is not involved in doing something for his community," the nominator said.