Not so, and it probably works better when used
with a hitch vice eye knot --more stable (and such
knotted structures are in ABOK).
Yes, I’d not call it a “knot” but a “knotted structure”
(which includes a knot (if not two)).
..., [i]for the intended applications[/i]. Here are some similar knots, and the pro-con comparison.Constrictor knot: … Hard to release the constriction.
No, quite the contrary, and this is why it
fails in your applications : its security depends
on firm, convex surfaces, not compressibly soft
ones (bed roll) or broken ones (collection of sticks)!
Useful as a constrictor knot for the 2-1 pull advantage.You're actually close on this, but given your apparent counting of [u]theoretical[/u] MA, no, the [i]trucker's hitch[/i] has 3:1 ; after friction is accounted for, the actual MA is more like 1.6:1 --YMMV.
the knot will grab as it tightens.Which grabbing further reduces MA, NB!
I'd be surprised if it hasn't been done before.I've tried it, and didn't like the instability of the nipping turn. Somewhere in the lonnnng [i]Gleipnir[/i] thread is a post of mine in which I present a like structure in which a line runs through the nipping turn to keep it from capsizing, and so another eye is employed to enable the haul line to be returned through the nipping eye. Which, yes, is more complicated to set up.