Also called the Blood Loop, the Dropper Loop is yet another useful fishing knot based on the series of Overhand Knots.
1 Make a Multiple Overhand Knot with four tucks.
2 Pull the center of the bight or belly through the center part of the spine.
3 Tighten the loop.
The Dropper Loop can be used to position additional flies, weights, or hooks along a fishing line.