Loop Knots for Fly Fishing: Dropper Loop and Perfection Loop

What loop knots are for

A loop knot gives you a fixed, non-slip circle in the line. That circle can serve as a connection point, as a way to let a fly move freely, or as the base for a second fly. Because the loop is formed in the line rather than tied to something, you can create one anywhere along a length of tippet or leader.

In fly fishing, the two classic uses are leader-to-line connections and multi-fly rigs. The perfection loop handles the first, and the dropper loop handles the second. Understanding which job each does keeps you from using the wrong one.

The perfection loop

The perfection loop is tied at the end of a line. Form a small loop by crossing the tag end over the standing line, then make a second loop by wrapping the tag behind and over again. Pass the tag between the two loops, and then pull the first loop through the second while holding the whole thing between your fingers.

Tighten it slowly while keeping the loop open to the size you want. The finished knot should lie symmetrical, with the tag pointing away from the loop at a right angle. Trim the tag close. Many anglers practice this on a thick piece of line first, because the first few attempts feel awkward and the order of steps can be easy to lose.

The dropper loop

To tie a dropper loop, make a loop in the middle of the line and twist one side around the other for four or five turns, opening a gap at the center of the twists. Take the bottom of the loop and push it through that gap, then hold the loop in your teeth or with a finger while you pull the two ends of the line to tighten.

As the knot closes, the loop should stand out at a right angle from the main line. Moisten the line before the final pull. You can then tie a fly onto the loop, or attach a short length of tippet to it with a second knot. Keep the dropper short enough that it does not tangle around the main line on every cast.

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Why loops fail or look messy

Loop knots can fail for the same reasons as other knots: dry tightening, twisted strands, and worn line. Pulling too fast makes the knot jam in a lopsided shape. Heavy tippet can be stiff enough to resist forming a clean loop, so you may need to work it gently with your fingers.

A dropper loop that lies flat along the line instead of standing out usually means one side was pulled harder than the other. A perfection loop with a crooked tag often means the wraps crossed. In either case, take it apart and start again rather than trusting a poor knot.

Tools and materials that help

Loops are easier to tie in fresh, supple line, so avoid old spools that have curled or hardened. A sharp pair of nippers trims tags cleanly, and a small light helps you see what you are doing at dawn or dusk.

A leader wallet keeps your spare leaders and loops tidy and protected, so you are not tying everything on the stream bank. If you fish multi-fly rigs, a hemostat or forceps can help you hold a tiny loop while you tie a fly to it.

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Safety and fishing practice

Multi-fly rigs mean more hooks on the line. Cast with care, check behind you for people and branches, and consider wearing glasses to protect your eyes from stray flies. When you fish with droppers, check your local fishing regulations, since some waters limit the number of flies or hooks you may use.

Dispose of old line and clipped tags properly, and do not leave them on the bank, where they can harm birds and other wildlife. Pack out every scrap of tippet you cut, because even small pieces can tangle birds, fish, and other wildlife.

Building a simple two-fly rig

A common way to use both knots together is to tie a perfection loop in the butt of a leader, join it to the loop in your fly line, and then place a dropper loop a foot or two above the point fly. The dropper fly hangs off the loop, while the point fly sits at the end of the tippet.

Keep the setup simple at first. One heavier nymph on the point and a smaller one on the dropper is a typical starting arrangement, and you can change the spacing and weight as you learn how the flies drift. Check your local rules about the number of flies allowed before you tie up a rig.

Frequently asked questions

Which loop should I learn first? The perfection loop is useful for building or changing leaders, while the dropper loop is useful for rigs with two flies. If you fish a single fly, start with the perfection loop.

Can I tie a dropper loop in fluorocarbon? Yes, but it is stiffer and slicker than nylon, so wet it well and pull slowly while you watch the loop form.

How long should the dropper be? Many anglers keep it between several inches and a foot or so. Shorter droppers tangle less, while longer ones let the fly move more. Adjust based on conditions and what works for you.