How Do You Tie A Figure-8 Follow-Through Knot?
After tying the first Figure-8, thread the end of the rope through the harness loop between your leg loops and pass it up through the harness tie-in point on the waist belt (same waist loop that the belay loop is attached to). Snug the Figure-8 against the leg loops. Consult your harness instructions for the exact tie-in points on the harness.