This knot serves the same purpose as a lark’s head, except it cinches tightly to the ring or spar rather than being prone to slipping. When the inside cow hitch is tightened securely, it rarely slips, and even this possibility can be avoided by adding a stopper knot to one of the rope ends and using the other as the working part.
A. Start the inside cow hitch with the same sequence as the lark’s head. Make two loops—an overhand loop followed by an underhand loop—and place this combination flat under the spar or ring. Bring the two working parts of the rope down around the spar and through their respective loops.
B. Pull down on the two working parts, and continue pulling downward on the working parts to tighten the hitch around the spar.
C. Tighten and shape the knot.
Original materials used with thanks to Irene Rodriguez and John Bennett