a clamp help to make the knot.
Put the clamp in loop B, hold in P.
Let loop B hang down
- Make 4 wraps around the BF
- Take the BL end with the clamp
- Pull the BLthrough loop B
- Lubricate and pull on the BL to close the knot and pull on the
BF to tighten .
See Clinch with a clamp