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A coiling or coil is a curve, helix, or spiral used for storing rope or Wire rope in compact and reliable yet easily attainable form. They are often discussed with .
When the last segment is reached form a short bight atop the gathered rope with its standing end. Grasp the working end and pass it over the bight and back through the center of the coiled rope in a round turn several times, making each new wrap closer to the bight until only a short tail remains. Pass this tail through the bight then grasp the standing end and pull it away from the bight until it is cinched tight around the working end.
For added security, ensure both ends are sufficiently long to tie them into a reef knot.
Unlike the alpine coil it cannot be attached to a climbing harness for climbing, and thus is useful only for transporting a rope to and from where it must be used.
The method is also useful for much smaller items such as for keeping earphone cables from tangling.
Start with both rope ends in one hand. Pull 1.5–2 arm lengths of the pair through and let their ends hang free. Begin coiling the balance of both strands one arm length at a time, alternating the gathers in the opposite hand into two separate "lobes" (or wings) draping on either side. Bluewater Beta: The Backpacker's Coil
With 1.5–2 arm lengths remaining secure the coil by wrapping both strands twice round both lobes approximately 1–1.5' down, then pass a short bight above the wraps and through the coil. Pass both free ends over the top of the coil and through the bight to cinch it tight.
Attach the rope for transport by placing the coil atop one's back, with one free end passing over each shoulder. Pass the ends back under the armpits, cross them over the coil, then bring them forward again, securing in front with a reef knot.
An alternate method draws the doubled rope over the shoulders instead of in front of the climber.
The "over/under" name refers to the practice of twisting the cable in one direction to make the first coil, and un-twisting it to make the next, and repeating this until all the cable is neatly coiled. Care needs to be taken to keep each end on its proper side of the roll when uncoiling otherwise a knot will appear with every other loop. Connecting the ends on the outside of the loops, or tying them in that position, ensures that the ends don't pass through the loops in storage so there are no knots when the cable is laid out.
There are a number of informal terms in common circulation including "over/under wrapping", "countercoiling", and "flip-coiling".
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