Fair enough. I'm still not quite sure why you'd bother tying it, since a round turn and two doubled hitches is more secure, less likely to jam and just as quick to tie.No need to be sorry as you're wrong, it's not a "terrible version of 'round turn and two half-hitches", it's a Tentionless hitch....different knot for a different purpose, tied differently with different strengths and weaknesses.
I am sorry, however, to point out your mistake....no offence![]()
I'm an RYA sailer, an MLTB SPA holder and Tree surgeon so by and large I'm pretty good with ropework and knots![]()
there are a number of 'not knots' similar to this; the one called a 'come along' comes to mind (used for hauling logs but also as a temp hitch to a very thick cable). What they all have in common is that they are for temporary use when someone is 'supervising' the knot.