I had shown this tight hitch elsewhere (1), but I believe it belongs more to this thread, along with the nice
Alaskan hitch, presented by Andrew / squarebanksalaska, and all its other hitching cousins.
Although it utilizes the zigzag path of the Standing Part on the surface of the pole, and so the mechanical advantage offered by a Cow hitch, it is not based on a "whole" Cow hitch. Perhaps because of this, it can not be tied in-the-bight, ( so, in comparison to the Locked Single and Double Cow hitches, it is less versatile ) - but, in-the-end, it can be tied very easily, especially if one follows the tying procedure illustrated in the two attached pictures.
First, we form the "half" Cow hitch", shown by the blue rope. Then, we tie a half hitch around the Standing End, shown by the yellow rope. To set up and finish the knot, we push / translate this (yellow) half hitch through / beneath the ( blue) bight of the "half" Cow hitch, and we pull the (blue) Standing End against the pole, as hard as we can. ( When the Stranding End of a
tight hitch, which also utilizes a mechanical advantage, can be pulled towards a direction perpendicular to the surface of the pole, we may use our hands
and feet, like rowers

- and so we become able to induce, and "lock" within the wraps, an enormous amount of tensile forces, enhancing, in this way, their gripping power
without increasing their number ).
Now, the point I would like to make here, is that the locking mechanism of this hitch resembles the
opposed bights locking mechanism, described and shown ( in a "simplistic" representation ) at (2). The first of the two bights is the
U-shaped blue bight, and the second bight is the
O-shaped yellow bight. So, here the second bight is not
U-shaped - and it is not
L-shaped either ( like the second bight formed by the sharp, 90 degrees deflexion of the Tail End around the Standing End at the
Locked Single Cow hitch ). However, the way the Standing Part is immobilized in this
tight hitch ( and that is exactly the meaning of a "tight hitch"/ binder : a hitch / binder where we do not secure only the Tail End, but the Standing End as well, in order to be able to pre-tension its wraps ), this way remains essentially the same : the straight, more or less, line, is squeezed in between two opposed tensioned bights, and the whole arrangement of all those segments of the rope works, regarding any induced tension during pre-tensioning, like an efficient ratchet-ing device ( in short, it is
a rope-made ratchet ).
To the curious reader, who might wonder how I had joined the blue and the yellow rope, I show the back side of the pole, too

: a flat, most simple, nice little
tumbling thief bend, was enough.
1.
http://igkt.net/sm/index.php?topic=4845.msg31585#msg31585 2.
http://igkt.net/sm/index.php?topic=4906.0