SINGLE-JACK
ArboristSite Guru
Yea that system demonstrated by Kermit the Frog there in that video looks great. Simplicity, and like you said TreeCo, you're always tied into your primary DRT so whatever may happen with the little mechanicals is a moot point, safety wise.
Does anybody sell bungy stock cordage?
Awesome video. I like Kermit, he's cool!
edit: Kermit's system does NOT require the use of hand ascenders, right? I don't see how they'd help.
I occurred to me, no one answered your bungee question. If you 'Google' bungee you'll find lots of sources. However, I use the simple and cheap tarp bungees. You know, the ones with the little colored ball on the end. You can buy them almost everywhere - home centers, hardware stores, etc. They come in packs of 4 or more. It's good to have some extras for tying up stuff and they do wear out.