People working in the industry had started organising social tree-climbing competitions before the contests in New Zealand turned regional, national and international as fully-fledged sporting events.
"Globally it really took off from there and the best trees to climb in my opinion are big pohutukawa or oak trees. Anything with big, spreading canopies are better to climb. But it comes down to the type of climbing.
"Some trees like Norfolk pine and redwoods are very tall, so you're climbing for the height, and other trees are wide and spreading and it's a different sort of climbing, you're climbing up and around as opposed to just up.
"It was a natural thing that competition came from the social side of climbing.
"People in arboriculture were climbing trees all day, every day, with ropes and harnesses and chainsaws, and socially they got together and set each other climbing challenges. And it's not always about the speed, it often can be about the trickiness of what you want to do."
Now Mr Wanhill only climbs trees recreationally and came to Taratahi from a post at WelTec. He started at Taratahi earlier this month and was relishing the opportunity to work in primary sector education again.
"I was working in Thought Planters before Weltec, which was a slightly more urban education, and Taratahi is about getting back to the primary sector, my roots to use an arborist pun, which is where the real length and breadth of my experience comes from."