Fly Fishing Knots: Double Surgeon's Loop Video
The Double Surgeon's Loop is easier to tie than a perfection loop in heavy tippet, but the standing part of leader is cocked off to one side.
How to Tie the Double Surgeon's Loop
2. Pass the single loop through again to create a double overhand knot.
3. Lubricate the knot with saliva and tighten by pinching the tag and standing parts of the line with one hand and pulling the loop in the opposite direction.