... the binders that you show in this thread http://igkt.net/sm/index.php?topic=4818.msg31377#msg31377 seems to me to fall into the same category of this ... "have to pull both ends" binders
Yes, indeed, the more you approach the mechanism of the initial
Gleipnir binder, which does not use a long nipping "tube", the less you are able to handle each of the two ends independently of the other. A longer nipping tube, be it a double overhand, a triple overhand, a single- or double-coil Clove or Girth / Cow hitch, offer more inner room, where each returning eye leg or Standing End can move, so it can be pulled and be re-adjusted, without influencing the state of the other leg or eye, without unlocking it.
However, if you go too far towards this direction, you start having problems with the balance / stability of the mechanism ( if used as a mid-air binder ), as I tried to explain in my previous posts.
We try to tie a shorter or longer nipping mechanism on the middle of the line, in the case of a mid-air binder, or on the surface of the pole, in the case of a tight hitch. We pass the ends of the returning eye legs or the ends of the wraps through this nipping "tube", and we adjust / pre-tighten the binder / hitch.
An L-shaped deflexion of the Tail ends helps them take the shape and work as "hooks", so it helps the nipping "tube" to grip them and work as a "handle" - but a very acute deflexion can present difficulties in adjusting / pre-tightening.
A "twist" of the Tail ends inside this "tube" is beneficial, as we already saw even in the case of the single-coil
Gleipnir, in the
simple-hitch-a-la-Gleipnir - but a too convoluted entanglement between them can also hinder the easiness with which we should be able to adjust or pre-tighten any mid-air binder or tight hitch.
We are under the shadow of this huge Gleipnir tree, which leaves a very small quantity of new light to arrive on us, so a little room for any real, worth the trouble improvements - but which has enlightened our understanding of all our "old" knots so much - including our understanding of the bowline ! So, no wonder that the task of finding something well-balanced, in form, amount of material and moves required to tie it, security and efficiency, is not so easy.