 However, when attempting to attach the F8 eye knot to a climbing harness or to a tree, the TIB method "will not work".Instead, the knot must be tied in a 2 stage tying process by first tying a figure 8 knot (ABoK #570) and then re-threading the tail through and around the #570 F8 knot to re-create the final F8 eye knot (#1047).Unlike a hitch, a loop knot creates a fixed eye in a rope that maintains its structure regardless of whether or not it is fastened to an object.