"The Bungee Tether The final link to a great ascender system is here thanks to the folks at Buckingham. Instead of simply creating a support from saddle to ascender, they've taken the next logical step with this expanding and contracting bungee-type tether."
http://www.sherrilltree.com/Professiona ... ether-1419
I'm having a hard time understanding why this is the "next logical step". Can any arborists here enlighten me? Leo