f. Double Figure Eight. Use a Figure Eight loop knot (Figure 5-10) to form a fixed loop in the end of the rope. It can be tied at the end of the rope or anywhere along the length of the rope. Figure Eight loop knots are formed by two ropes parallel to each other in the shape of a Figure Eight, no twists are in the FigureEight. Fixed loops are large enough to insert a carabiner. When you dress the knot, leave at least a 4-inch tall on working end.