I don't have a ticket, simply some twenty years' experience of managing some woodland - aka my garden. I've definitely "learned by doing" and there's a knack to working out where something's going to drop.
Problem is, a small error at the base gets translated into a much bigger error at the top end.
It's rare a dangly tree defeats me. A series of v-shaped cuts around waist height is usually enough to allow gravity to snap the trunk. Then it's just a matter of pulling the top part free.
Nothing wrong in that in my case pay masters tend to get twitchy if don’t
