Integrated up line – Use the existing tail, no need to add new rope
Before we talk about techniques for primary/main load-bearing uplines (supporting the chest or hips), let’s talk about suspending other lighter or secondary elements like knees, ankles, arms, wrists, heads, etc.
Let’s use a knee, for example.
In cases like this you might have a Single Column.
In this case I have chosen a Somerville Bowline, an approach with excellent stability (one that I normally choose unless doing a more traditional scene).
Once that single column is complete, choose what you what you will do with the bight (See “Options for the Bight” below).
Because the Somerville Bowline is a non-collapsable knot, you could choose to leave the bight as it is and use the tail directly as your suspension upline.
But if it is a knot that can collapse, like a traditional Square Knot Single Column, or if you just want the bight out of the way, run the tail through the bight first…
…then just use the tail to connect to the hard point. When you come back down from the hard point, run the tail under the strap itself as the second point of your lift system.