If the gripping performance, on a vertical pole, of the "Four-Coil-Ring Fixed-Gripper Coil Hitch," which I mentioned earlier in this thread, virtually knocked your socks off, then what I am about to mention may downright knock you off your feet:
Try making another Four-Coil-Ring Fixed-Gripper Coil Hitch on a vertical pole, but instead of using the component knot of the Fixed-Gripper Hitch (namely, the Fixed-Gripper Knot) to make your coil hitch, use the slide-and-grip structure of the Fixed-Gripper Slide-and-Grip Hitch. Take your time, dress it well, and push it well into the four-coil-ring coil a number of times, until all of the play has been completely worked out of the structure and it is as flush as possible to the coil on the pole.
Finally, try the slide-and-grip structure of the Fixed-Gripper Slide-and-Grip Hitch Variation to make your Four-Coil-Ring Coil Hitch.
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http://igkt.net/sm/index.php?topic=1839.msg12539#msg12539Disclaimer: I am not responsible if you hit your head when the gripping performance of this structure knocks you off your feet.
JCS