Make sure that there is at least 3 inches of tail leaving the knot. Tie off the extra tail of rope to the live end of the rope using several overhand knots or a double fisherman's knot. Clip a locking ...

The Mule Knot (a.k.a releasable knot) is ideal to lock off the rope on the belay plate. There are many occasions in climbing when, belaying from the harness using a device which does not self-arrest ...