Fly Tying

How To Tie Joe Cordeiro's Flat Mack

May 19, 2025 · 7 min read
Sabin PiatekBy Sabin Piatek
Sabin Piatek
Sabin Piatek

Sabin Piatek is a fly fishing and tying expert that is always out on the water. He fishes everything from small creek dry flies to 12" Beast flies ...

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How To Tie Joe Cordeiro's Flat Mack

 

Join us for another fly tying tutorial. This time, we have New England legend Joe Cordeiro in the house to demonstrate how to tie his Flat Mack pattern.

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As the striper run here in Maine is starting to heat up, we have another great fly tying tutorial for you to make sure that you make the most out of your season. This time, we are joined by none other than Joe Cordeiro. Joe is a long time angler, guide, and fly tyer who resides on the Massachusetts coast. He has helped revolutionize tying with flatwing feathers and has created many great flies that work well for stripers anywhere during the run. This Flat Mack being one of them. If you want to catch more stripers this summer, be sure to have some of Joe's patterns in your box!

 

We want to send our deepest thanks to Joe and his son Greg for joining us for an afternoon of tying and hanging around the shop! You can find them both on social media and at flat-wing.com.

We've put together a kit that contains all the materials you need to tie this exact fly pattern.

 

Click the button below to shop the selection.

Materials:

Hook: Ahrex SA270 (3/0)

Thread: UNI 3/0 (White)

Bucktail: Hareline Large Northern Bucktail (White, Lavender, Olive)

Flash: Hedron Flashabou (Gold, Red, Blue)

Feathers: Cordeiro Flat Wing Saddle (White), Hareline Flat Wing Saddles (Yellow, Olive), Hareline Grizzly Half Saddles (Chartreuse, Olive, Teal Blue), Hareline Half Rooster Cape (Cream)

Body: Hareline Flat Diamond Braid (Purple)

Eyes: Jungle Cock Feathers

NOTE: We do not currently have any of the pink saddle feathers, or authentic Jungle cock. Sorry for the inconvenience.

Step 1

Close-up hands using black vise and pliers to wrap white thread on a silver hook with pink skirt — Flat Mack fly tying

Start by laying down a tidy thread base until you are even with the hook point.

Step 2

Hands tying white synthetic fibers onto a hook in a vise with pink marabou behind, Flat Mack fly tyingHands trimming white synthetic fibers with scissors for fly tying a Flat Mack on a hook in a vise, pink feathered background

Cut a pinch of bucktail that is around 2x the hook shank length, making sure it has enough stiffness to support the material. Using your left hand, grab the tips of the bucktail and use your right hand to pull out any shorter fibers that are unnecessary.

Step 3

Hands trimming white synthetic fibers with scissors for Flat Mack fly tying, blurred pink skirt and lures in background

Hand-held vise clamps white synthetic hair tied on hook for Flat Mack fly; fly tying tools and pink materials blurredTie the clump of bucktail on top of the hook shank. Use your thumb and forefinger to pinch and hold the material in place while using tight thread wraps to lock in the bucktail.

Step 4

Hands fly tying a Flat Mack: white synthetic hair bound to silver hook in black vise against pink backgroundUsing your thumb and forefinger, pinch the bucktail flat to create a platform for the feathers to rest on. Use tight thread wraps to lock in the shape of the bucktail.

Step 5

Hands trimming white marabou feathers with scissors on a vise during fly tying of a Flat MackWhite marabou Flat Mack fly secured in vise with slim white feather tail on hook, fly tying tutorial

Select a single feather from a Hairline Half Rooster Cape that is around the same length as the bucktail tips. Strip away the fluffy fibers from the stem, leaving the fine fibers. Tie this in on top of the hook shank so that the feather tip angles upward to add support for the next steps.

Step 6

Hands tying a white synthetic Flat Mack fly with orange scissors and black hook clamp, close-up fly tying for fly fishing

Using the fluffy fibers you stripped from the feather stem, create a dubbing noodle and slide it down your thread onto the top of the hook shank to form a "pillow" for the next feather.

Step 7

Close-up hands fly tying white marabou feathers onto a hook for Joe Cordeiro's Flat Mack, showing needle and thread

Hand holding white marabou feather and silver hook for fly tying; clear thread and blurred feather backgroundSelect one Cordeiro Flat Wing Feather that is around 2x the length of the last feather. Strip back the fluffy fibers, leaving the fine fibers. Lay this feather flat and use your thumb and forefinger to hold it in place while tying it to the top of the hook shank.

Tip: Leave the stem attached to make tying this feather in easier.

Step 8

White marabou streamer with gold tinsel rib and visible hook eye clamped in vise, fly tying close-up

Tie in 2–3 strands of Hedron Flashabou in gold. Flash fibers should extend just past the tip of your last feather.

Step 9

Hands tying a yellow feather Flat Mack fly with white bucktail fibers on a vise, close-up fly tying shotYellow and white marabou Flat Mack fly in vise with bead head, showcasing fly tying feather tail and materials

Select a single Hairline Flat Wing Feather the same size as your last one. Use the same technique to pull out the fluffy fibers and tie it in on top of the hook shank so it lies completely flat.

Step 10

Hand trimming bright pink marabou feathers with scissors for fly tying

Pink and yellow feather fly on a vise with blurred pink marabou and fly tying materials for fly fishing

Select a single pink Hairline Flat Wing Saddle feather. This feather should be longer than the last. Use the same technique to pull out the fluffy fibers and lay it flat. Tie this in on top of the hook shank.

Step 11

Pink Flat Mack fly secured in vise, layered synthetic and feather fibers tied on hook for fly tying tutorial

Tie in 2–3 strands of pink Flashabou that extend just past the tip of your last feather.

Tip: Pay attention to where the thread sits on the hook shank. Limit your thread wraps to ensure there is plenty of room on the hook shank for future materials.

Step 12

Pink and white feather and synthetic streamer fly tied on a hook in a vise, fly fishing tutorial

Tie in another white Flat Wing Feather using the same technique — strip the fluffy fibers and lay it completely flat on top of the hook shank. This feather should be slightly longer than the last.

Step 13

Turquoise and pink feathered Flat Mack streamer with black barred feather and shiny tinsel, saltwater fly for fly fishingTie in a single blue Hairline Grizzly feather using the same technique — strip the fluffy fibers and lay it flat on top of the hook shank. This feather should be the same length as the last. Tie it in with 1–2 loose thread wraps, then tighten to lock it in place. Tie in 2–3 strands of blue Flashabou the same length as the feather.

Step 14

Hands tying Joe Cordeiro Flat Mack fly with yellow-green marabou and barred feathers, detailed fly tying for fly fishing

Hand-tied Flat Mack streamer fly with chartreuse and black barred feathers, blue flash accents on a hook vise

Select a green/chartreuse Grizzly feather that extends to the tips of the last few feathers and tie it in using the same technique, so it lies completely flat on top of the hook shank. Tie in 2–3 strands of purple Flashabou on top of the hook shank so they extend just past the feather tips.

Tip: Pay attention to where the thread sits on the hook shank. Limit your thread wraps to ensure there is plenty of room for future materials.

Step 15

Flat Mack fly on vise with barred green-yellow feather, white and pink fibers and metallic tinsel, fly tying

Trim the feather stems sticking out in front of the thread and use tight thread wraps to lock in the last few steps, keeping all feathers on top of the hook shank and lying flat. Tie in a 10" strip of purple Bill's Body Braid on the bottom of the hook shank.

Tip: When wrapping tightly, keep the thread away from the hook point, as it will cut right through it.

Step 16

Hands tying a purple-threaded Flat Mack saltwater fly with green, blue and white marabou and flash for fly fishing

Wrap the Body Braid forward while keeping firm tension on it. Make sure to cover thread wraps completely and tie this off approximately one hook-eye length behind the eye of the hook.

Step 17

Hands trimming white bucktail Flat Mack fly with purple thread and iridescent tinsel during fly tying

Hands tying white synthetic Flat Mack fly with purple flash on black hook in vise using pliers, fly tying close-upGrab another pinch of white bucktail. This clump should extend past the last tie-in point of bucktail. Use your left hand to hold the tips while using your right hand to pull out any unwanted shorter fibers.

Tip: Pulling out unwanted fibers reduces bulk and allows the fibers to move more naturally in the water.

Step 18

Hands tying a colorful Flat Mack fly with purple thread, white marabou and iridescent tinsel for fly fishing

Tie this clump of white bucktail in on the bottom of the hook shank using tight thread wraps. Use your thumb to slightly roll the fibers up the sides of the hook shank to create a belly profile on the fly.

Step 19

Close-up hands trimming pale lavender synthetic fibers with scissors while tying a colorful Flat Mack fly

Fly tying close-up: hands building Flat Mack fly with purple thread, green barred feathers and white marabouCut 2 thin clumps of purple bucktail that are 2–3" long and tie these in as shown, creating small shoulders to support future material.

Step 20

Hand tying a colorful Flat Mack fly in a vise with white and pastel synthetic fibers, blurred fly tying materials

Tie in one thin clump of olive bucktail on top of the hook shank.

Step 21

Turquoise and black barred Flat Mack fly with white bucktail and chartreuse synthetic fibers tied in vise, fly fishingSelect a blue Grizzly feather that extends to match the tips of the last feathers. Use the same technique to strip and tie in this feather on top of the hook shank using a few tight thread wraps. Trim the excess stem to make room for more material.

Step 22

Green-yellow barred feather Flat Mack fly with blue accents and white marabou tied in orange vise for fly fishingSelect one green/chartreuse Grizzly feather that extends to the tips of the previous feathers. Use the same technique to strip and tie it in on top of the hook shank so it lies completely flat.

Step 23

Hands tying a chartreuse, black and purple Flat Mack streamer with long barred feathers, marabou tail and tinsel — fly tyingSelect a single olive Flat Wing Feather and use the same technique to strip and tie it in on top of the hook shank.

Step 24

Hands arranging spotted guinea fowl and grey wing feathers for Flat Mack fly tying, tan spots and blue flash in backgroundHands tying a white and purple Flat Mack fly with iridescent tinsel and marabou on a hook for fly tying tutorial

Select 2 Jungle Cock feathers from the sides of the cape that do not have the yellow dot. Tie these in on each side of the hook shank using a few tight thread wraps to lock them in place. Trim the excess stems.

Step 25

Hands holding black feathers with tan spots (guinea-style) for fly tying, close-up of hackle material and workspaceHands tying Flat Mack streamer with white and purple synthetic fibers on hook, thread bobbin and vise, fly tying

Select 2 Jungle Cock feathers that have the yellow dot, imitating the eye of a mackerel. Stack and tie these on top of the previous Jungle Cock feathers on each side using a few tight thread wraps. Trim the excess stems.

Step 26

Streamer Flat Mack fly with white zonker tail, olive-chartreuse body and black hook finished with tying tools, fly fishing

Trim all remaining excess stems and use tight thread wraps to lock everything in place.

Step 27

Hands tying a Flat Mack streamer with white, olive and blue synthetic feathers on a silver hook, fly tying close-up

Hands applying head cement to a green and white Flat Mack streamer with purple flash and long synthetic hair, fly tying

Add 3–4 whip finishes and apply a coat of Sally Hansen's Hard as Nails (or your preferred head cement) to finish the fly.

Your Flat Mac is Ready to fish!

Sabin Piatek
Written by

Sabin Piatek

Sabin Piatek is a fly fishing and tying expert that is always out on the water. He fishes everything from small creek dry flies to 12" Beast flies off a boat. He has been tying flies for almost a decade and has been tying commericaly for the last 5 years. Sabin always wants to help people improve their fishing and tying knowledge.

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