Page 79 - Peter Randall "The Craft of the Knot.."

STEP 3 Treat the resulting loop as if it were a pulley by passing the
running end around the anchor point and then back through the loop.

STEP 4 Bring the running end back up through the loop and pull it
toward the anchor point to tighten the standing part.

STEP 5 Secure the knot with two Half Hitches (see previous).

Make the loop as far from the anchor point as needed to take out slack
in the standing part. Other loop knots can be used instead of the Slipped

Figure Eight Knot, such as the Directional Figure Eight or the Butterfly
Loop (see Chapter 3 for both). The Slipped Figure Eight Knot is used
most often, as it is quick to tie and untie, and has a strong lead that is
not very damaging to rope.

WAGONER’S HITCH