hackle in a tail

Someone once told me that the tail on a baitfish fly 'doesn’t have to be perfect... Just convincing enough to fool a fish with trust issues.'

Then again, his favorite quip is: 'You only need one gullible fish.' But that is another tale for another day. The truth is that the right tail can give a baitfish fly (and streamer for that matter) that irresistible, lifelike movement that triggers strikes when nothing else will.

What You Need To Know About Hackle

Not all hackle is created equal, and it doesn't take much to distinguish between mere feathers and those of true quality blessed with the gift of movement:

Saddle hackle The first choice for most streamer and baitfish applications. The long, narrow feathers provide excellent movement without excessive bulk, making them ideal for both large predator flies and smaller baitfish imitations. The natural taper creates a realistic silhouette that works well in both moving and still water.

Schlappen offers maximum movement for situations where you need to get a fish's attention. The webby structure creates significant water displacement, making it particularly effective in stained water or when targeting aggressive species. 

Hen hackle provides a softer, more subtle action. While shorter than saddle hackle, it offers fuller movement that can be deadly on pressured fish. 

The trick, as most experienced tyers will tell you, is to match out your pairs (from the same bird) before tying. Do this in batches before starting to tie. The symmetry not only looks better but ensures your fly swims straight and maintains proper action throughout the retrieve.

Curves, Tents And The Rule of Six

Tying in streamer tails with hackle isn’t just about picking nice feathers, it’s about how you place them. That subtle difference in angle or curvature can be the deciding factor between a tail that swims like a real baitfish and one that spins like a wind sock and fouls on every cast.

Let’s break it down.

Curve-In vs. Curve-Out

Hackle feathers have a natural camber or curve, like a leaf. When you hold one flat with the shiny side up, you’ll see the tip curve to one side. When tying streamer tails, the orientation of that curve changes the action and appearance of the fly.

Curve-Out Method (The Classic)

You take two hackle feathers and tie them in so the natural curves face away from each other. This creates a slight “V” or splay in the tail, helping to:

  • Prevent fouling by giving the feathers room to move

  • Enhance movement as each feather flutters independently

  • Widen the profile, making the fly look more like a panicked baitfish from behind

This is the go-to method for many traditional streamers, deceivers and bass bugs, and for good reason, it swims well, tracks straight, and resists tangling.

Curve-In Method 

Tie the feathers so the natural curves face toward each other, essentially hugging the hook shank. This method tightens up the silhouette, giving you a leaner, more torpedo-shaped profile. This works really well for when you’re trying to mimic slender baitfish like anchovies or glass minnows.

  • The tradeoff: Less splay means slightly less movement, and slightly more risk of fouling unless the feathers are stiff or supported.

Tenting

Tenting is a technique where, instead of tying feathers to the sides of the hook, you angle them up and in on top of the shank. The result looks a bit like an (old V-tent) pitched over the shank. This gives the tail volume, shape, and that baitfish-like taper you just can’t get from synthetics alone.

Perhaps a bit late in the game, but this perhaps leads nicely into the number of hackle needed for a good baitfish. 

Because large baitfish aren't flat (particularly in the salt). They're thick-bodied, with sides, backs, and bellies that catch light and push water. To mimic that, you need more than a simple pair of hackles; there is something of a magic number in six. Three on either side. 

baitfish tail with hackle

How To Prevent Fouling

Fishing a badly-tied hackle tail can be ultra-frustrating. You know that moment when perfect feathers transform into a useless tangle around the hook bend? 

There are various solutions to prevent this. Two of the most common (and effective) are to build an underlying base of bucktail, or to tie in a short loop of heavy monofilament.

The latter — tied in at the hook bend — acts as a gentle bumper between feathers and hook. Another trick that helps with this (as well as the general 'fishiness' of your fly) is to keep your tails proportionate: Roughly twice the shank length.

Don't Forget The Flash

Flash, used judiciously, can transform a good hackle tail into an exceptional one. But here we must tread carefully, too much and you've created not a baitfish but a Christmas ornament.

Nestle a few strands of flash between your hackle feathers, hidden until the light catches them just so. It adds as much confidence (nothing more effective than a fly fished with confidence) as sparkle. The effect should offer that momentary glint that triggers the feed response before the fish's higher brain can engage its skepticism. You only need one gullible fish, right? 

The Patience of Experimentation

As with most fly tying techniques, comes from everything you've read and seen in videos and then adding in the accumulation of small discoveries made at the vice and confirmed on the water. Tie half a dozen variations. Fish them methodically. Take notes not just on what works, but on why it works. Nothing is more of a confirmation that it worked than a fish in the net. Can't argue with that. 

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1 comment

Paul Gross

Nice article. I’m surprised though that you didn’t mention tying in hackle as flatwings.

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