Yosemite bowline form a highly dangerous slip knot. Additional safety is achieved by tying with a tail (see below). When finished, the working end forms a figure eight. Because of the danger of incorrectly tying the Yosemite bowline, it may be safer and less error-prone to use a standard or double bowline with a backup stopper knot added to the tail, such as a double overhand knot tied around the loop. The Yosemite finish can be applied to other bowline variants, such as the double bowline. While the knot's versatility suggests it as a convenient tie-in for attaching a climbing rope to
Stopper knot round turn is first taken, and a throat seizing, in length about a quarter of the round of the clinch, is put in. The monkey's tail is preferred for the purpose just described because it does less damage to rope than any knot. When the monkey's tail fetches against the rack the seizing takes the burden." A stopper knot is tied at the end of a rope to prevent the end from unraveling. It then functions like a whipping knot. A stopper knot is tied at the end of a rope to prevent the end from slipping through another knot,