I concur in Roo's recommending the
slipped buntline h. :
with much force likely taken in the turn around the
tree (or other object), the knot itself will not be so
tight as to hinder spilling its slip-bight/QR mechanism
--an important consideration, for the mere presence
of such a structure does NOT ensure easy spilling!
At some embarrassment, I'll still post this long-winded
eye-knot solution, which in comparison shows what a
clever knotter can do : dream up something Too Clever
By Half !!
<sigh>
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What knot would you recommend to tie an ATV to the tree
which [knot] is at the same time easy to untie,
once to rope is under the tension,
preferably with one hand.
I'm thinking of a
bowlinesque quick-release eye knot.
Given that you know the
bowline (to some degree of *knowing*),
let me suggest this solution.
1) The line will surround the tree --a normal eye knot--,
so that on release, the line will need to be pulled around
the tree. (This is in contrast to what I call "slip-
free" hitches,
where upon release, the line come completely "free" of
the hitched object --a bight having been taken around
(which thus comes at a cost of material --doubled by the
bight-- esp. for large objects!).
2) It more or less uses
bowline *mechanics*/structure.
3) HERE IT IS.
Take line around object;
form a bight in the line's end,
--long enough to wrap the SPart around 1-3 times,
and to then have enough tail to tuck a "slip-bight"/toggle
through the initial bight's exposed tip,
with sufficient tail of toggle for you to grap to
pull & release--
wrap the SPart's eye leg around this bight once, twice (, thrice?)
(this is making what for a
bowline is called "the nipping
loop"). (The more-than-one wrap might gain you some
degree of easier release --try it and see, and if not, well,
just the one turn does it.
NB: I say "wrap the SPart's
eye leg rather than "SPart"
itself, to guide you to wrapping towards bight tip
with SPart on the away end of wraps, not towards tip.
And if one did the easy thing of wrapping SPart ...,
then the knot will be too **helical** vs. **loop** and
put more force upon the toggle & be less stable, more open,
less desirable.
[Well, maybe not : considering that a
sheepshank can bind
even though its bight surrounds nothing, maybe in your
particular circumstance/material you'll favor a more helical
and less gripping main structure!?]
Heck, one can work with the initial bight qua single-strand
and do the
bowline quick-tie manuevre to put in the
nipping loop, then tuck through a slip-bight to close.
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My initial thoughts went to trying to build some hitching
structure by making
rolling hitch sorts of jamming &
gripping structures with a bight, but this line of attack
gut cluttered with a long bight whose doubling of material
was a big price and the workings inversely good.
--dl*
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