Tie: Captured Overhand Cuff

Based on this tutorial.

This is a cuff that will not collapse or loosen regardless of which direction tension is applied. It involves an overhand knot that is "catpured" from both sides, keeping it stable.

1. Tie the first wrist with doubled-rope.
2. Bring the rope towards the second wrist.
3. Make an overhand knot with the 2 strands. This knot will be the inner-most point of the second cuff. This controls how closely the wrists will be tied. I will call the space before the overhand knot, the "overhand space". It's not a problem if this overhand knot collapses into a half-hitch.
4. Wrap the wrist with the doubled rope and bring it through the overhand space. Pull it to close the cuff to the desired size.
5. Wrap the wrist one more time and it bring the rope back to the overhand knot again. I will assume the wrapping is going downwards on the wrist.
6. Any further wraps should be in the same direction. Only the first wrap should go through the overhand space, otherwise it will get quite crowded.
7. Bring the rope upwards, over all of the wraps, then downwards inside the wraps and pull back towards the first wrist. Ensure that all of the wraps are the same size.
8. Bring the rope to the other side of the overhand knot and make a half-hitch around the 2 strands of rope there and tighten it against the overhand knot (there is 1 wrap between it and the overhand).

Tie: Wrists behind neck

Based on this tutorial.

1. Tie the wrists using e.g. Lark's Head Double Column Cuffs.
2. Bring the wrists over the head and pull down so that the tail of the rope is going down the centre of the back.
3. Take the tail of the rope off to one side and wrap around the front and back to the back.
4. Pull the tail between the back and the vertical rope and then down over the start of the wrap to form a cross.
5. Adjust the rope so that the cross is centered and the rope is tensioned as desired.
6. Wrap back again in the opposite direction (under or over the existing wrap).
7. Bring the tail through the bight formed in step 6.
8. Tie it off in a half-hitch on the opposite side.
9. Optionally use the spare rope to pull the wrists tighter.

If the wrists are not pulled far enough back, it is quite possible that the bottom can slip their head through an arm and get their elbows down. Pulling them back tightly may make this tie intolerable. Instead you can use more rope on the arms to make it impossible for the head to pass through.