It's already flipped the rootball with it when if fell. Here is a video of it. On the side of the video it has a branch about 3/4 the way up holding some tension and then has a large crotch where the brances started that are on the far fenceline. I put a large round under the crotch area and also under the area a few feet back from the crotch. I'm going to cut between them, then cut off the rootball a few feet up from it. I'm hoping that if the rootball falls it will be back where it came from. Weight of the tree should prevent it from falling forward into the trunk, worse case scenario might pinch the bar. There's also a round under the trunk about 10' up from the rootball to keep the trunk off the ground for bucking and not getting into the dirt and rocks.
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Did I mention that there's a leaning cherry tree and another dead oak or two he told me I could cut since he has enough firewood for years and there's more down he could care less if I take.:msp_w00t::chainsawguy: