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Cool idea. A tip if I may from an experienced rigger. If the slack was pulled out of the rope where it attaches to the hair and the back of the harness, then it would pull on the hair slightly, forcing the head upward. This accomplishes a few things, 1. it makes the rope look much better than slack rope, 2. It forces the sub to gaze at their master, 3. It puts tension throughout the rope creating a stronger and more connection sensation from master, to rope to sub. It secures the sub and makes them feel "secure" and wrapped up as opposed to the rope feeling loose. Basically the difference between a loose or weak hug and a good strong one, you feel the connection much better, you feel more secure. Hope this helps.
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