My initial thought was to encase the entire bundle in electrical tape, but it was a bad idea. It made the entire thing too rigid and tough to deal with. I ended up taping the bundle every foot or so to keep the thing together and as tangle free as possible. Even that was dumb. Just using zip-ties worked best.
Bundles in the attic. I recommend stretching them in the opposite direction you are installing and laying them flat. One of the most tedious things about the project is trying to pull individual strands from the bundle to install while keeping the rest of the strands from tangling.
