good to see ya again Doctari! Thanks Bonsaihiker for posting this, good editing!
Happens that I use a variant of the pack leash meself. Just a 6' piece of cord : long enough to go around a modest tree doubled over plus some. Clove-hitch around the tree, form a marlin-spike hitch on the tails (use a trail stick), hook the pack loop around the marlin spike.