thanks Steve,
I call it the diamond pull.
It was a double trunk Tulip Tree, the v-crotch was splitting and each half was trying to uproot and fall.
the homeowner put on a small chain and binder during the rest of the windstorm which likely keep it upright.
During my estimate during the end of the wind storm, the ground and roots would surge up and down with the wind. I put on a bigger chain and binder.
Anyway, the one trunk was easy to fell, (already down in the short video clip) but I worried about the loss of opposing weight might cause the other to uproot and fall toward the house. not much of a chance with the binder in place still, but possible.
so I think we put ropes on the tree before felling the one easy side.
on heavy leaners that are also a brittle specie, I like to do a diamond pull like this, or at least a triangle pull.
If a heavy leaner is going to have to hinge a long way before it gets to vertical, there is more of a chance of the hinge-wood failing and the tree falling to the side IF you only use one direct rope pulling it. When you use a triangle pull, the hinge wood is more stabilized and kept from falling to the side (in my experience).
IF you go into a diamond shape, then BOTH ropes can attach to what ever is pulling and therefor the pulling tension is the same on each line (if you initially tie them at the same tension).
This is my opinion; all through experience with pulling nasty trees and is just my opinion. I do not know of anyone teaching it. I have never had a sketchy tree go wrong when using two pulling ropes in a triangle or diamond shape pull. I really think it adds stability to the hinge wood.
If any parts of this video are especially interesting to the viewers, I can easily create a short video of that one particular job.
The fell and fold oak where groundman runs from the GRCS should probably be shown in it's own short video. I commented about it on Lawrence Schultz comment under the video. Each limb was pre-notched and cut so they folded up and not puncture the geo thermal lines under the ground, but we needed those limbs to help with the weight balancing of the tree.