So I was showing my boy a trick for figuring out where a tree top will make it to when felled.
Don't know the name of it, I would just say it's basic triangulation.
The first picture shows my son figuring out the length the stick needs to be.
Put the stick in your hand tipping it towards you, shove it in your eye socket, well make it fit nicely(the length should be from your eye to your hand.
Now you tip the stick up and sight down the top of your hand where the stick is towards where you will be making your notch at the base of the tree.
You then move forward or back to determine where the top will end up at, top of stick should be at the top of the tree at the same time the part of the stick in your hand should be lined up with the notch.
This technique takes practice and has some varying factors such as the tree leaning towards you or away and being on a hill or flat ground, but will help determine how close it will come to obstacles in the line of fall.
He thought it would drop about 4' behind this stick(my spot). After the tree was down he told me he was lined up on a different tree lol. I can see where he is looking in the picture and will check it out tomorrow to see, but I believe he's telling the truth, he's a great kid whom I thank God for often
Here's where I thought it would fall, the top branch broke off and landed within 4' the other part of the branch went the other direction when it hit a branch on it's way down. My saw is lined up with the end of the branch.
Close enough for this job, just like hooked on phonics, it worked for me
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It's a good idea to practice this on every tree you can even when you don't need it, so you can get a feel for it when you have one you really need it for.