Classic (Square Knot) Double Column
When a rigger says “Double Column” without further specification, such as “Lark’s Head Double Column,” this is probably what they are talking about (or they are saying that you can use any Double Column you like).
This is a very quick and intuitive method of tying a forward-tension Double Column, using a variation on a Square Knot or Granny Knot. This version is commonly used in classical shibari.
On the downside, it is not as stable as the other options and can collapse if not properly formed or if too much tension is put on the knot without reinforcing it.
Important: See Reducing Risk for important safety information about tying the wrists.
The lack of stability in this tie can be a feature! This allows it to be rapidly untied.
Add an additional twist so that you have a full Square Knot above the cuffs.
(This technique can also be used to create the second twist when doing the original tie in steps 7-12.)