Just thought I would post some pictures from a very old remnant white oak tree that I climbed on Saturday. The oak had some dead branches to clean up one of which was the size of a tree itself.
The branch had ripped off and was leaning against the trunk. I was worried that if I left it, decay might spread into the trunk wood. I read in one of Dr. Alex Shigo's books that removing dead wood takes food away from the pathogens that could spread into the trunk wood. Also it allows the tree to compartmentalize quicker which allows the tree to focus it's energy elsewhere.
I used a couple of double sheave pulleys and some 5/8" double braid to lift the branch off the trunk and prevent the branch from damaging the root crown.
I named the tree Jackson because This area is where President Andrew Jackson was born. In fact both North and South Carolina claim the birth place.
https://picasaweb.google.com/110788003155069646893/Apr42011?authkey=Gv1sRgCI-Ll8Wm95e5lQE&feat=directlink