The best bet is NOT to mount the yagi directly to the tree.
Whatever you do will damage the tree.
Instead, use light duty tower alongside the tree, and fasten them
together loosely, using chain which is inside tygon tubing. Given
shape of most trees, there will be perhaps 3 or 4 points at which the
is adjacent to the tree. When you fasten the chain, you want some
both to prevent girdling the tree, and to allow the tree to move
the yagi (as much).
You can more safely climb this tower than you can the tree, and you
safely install and maintain the yagi. This also has the benefit of
more aesthetic than a naked tower.
I've also done this with a vertical and a pushup pole, although it
cliimbing, which I stopped doing some years ago.
Jim Jarvis, MBA
The Morse Group, LLC
732 548 5573 office
908 410 9130 cell
Achieving Results in a Changing World
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