So I'm searching good 'ol google for a tree trimmer, and I find you tube videos of guys climbing trees competitively. Turns out a lot of tree guys do this. There's an International Tree Climbing Championship, it a part of the International Society of Arboriculture.
Kinda cool, I mean we all did it has kids, we even challenged each other at it. It's definitely more of a sport than some "sports" that will remain nameless.
These dudes are crazy, go check it out on you tube.