Lark's Head

Create a loop by folding the rope. Hold the top of the loop with one hand.
Grab and hold both ropes together with your other hand, about 1-2 feet below the folded point.
Let go of the loop end. Reach through the loop with your free hand, and grab both ropes.
Pull both ropes through the loop to form the lark's head, which can be connected to your clevis or hook.