Originally, when I first did these a few years ago, I only used the one zip-tie, but after a few months they started pulling out of the tape. Adding the 2nd one keeps them nice and tight, but the long tails could still be pulled, moving the 2nd one up and shortening the length. It got to where a couple were too short to close, so I started trimming the ends and taping past the bottoms, which solved the problem.
Zombie Defense Force, Local 42 #61 "Darwin" IT'S TIME TO TOSS THE DICE DarwinZDF42
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