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The Silicone Hackle Prawn
By Richard Carter


The Silicone Hackle Prawn is a fly developed by myself during a computer contract in Whyalla, South Australia - as you can see I concentrated really hard on my computer work. This fly was developed after finding standard epoxy and hot glue prawn patterns too heavy and hard. On the other side of the equation I found hackle style prawn flies too light and in my opinion not the right feel to the fish when they clamp down on the fly increasing the chances of fly rejection. Common estuary prawns are see through creatures, soft to touch with a semi hard shell. A few blood vessels, prominent eyes, feelers and internal organs as the main points of reference. I wanted the new fly to have some of these features.

So the Silicone Hackle Prawn pattern was developed by combining some properties of two other flies - the Hackle prawn and The epoxy prawn. I dislike flies a with high proportion of the materials being epoxy, as it can greatly effect sink rates and doesn't feel like anything the fish might usually feed on, unless rocks or bi-valve shellfish are on the menu. Plus to get the shape right you have to do one fly at time by hand until the shape is right and sets. Drying machines are great for light coatings or small heads, but I haven't yet found or made one that dries flies with large amounts of epoxy in the shape desired. The Hackle Prawn - one of the Whisper Fly series**, for permit and bones, though fine for what it was designed for, did not meet the 'feel in the mouth' criteria of my saltwater 'match the hatch' fly design ethics and theories.

I mainly use the long shank stainless hook of Mustad for this pattern - 34011. As this forged hook has the strength required at the times when large bream want back to their structure and you have to put the brakes on hard. You don't want a hook opening up when this happens. Most of the species I target with this pattern, have a fair set of dentures (mangrove jack, bream and snapper) or have heaps of muscle to get back to their home (trevally and mulloway), so you want a hook that will last the distance.

The main material of clear silicone will give you a firm but soft body. It provides a neutral buoyancy that helps the fly suspend under the surface, just like the natural bait, without sinking like a rock as in the case of epoxy based flies.

Since its initial testing and tweaking period many species have been taken on the pattern. The Silicone Hackle Prawn has proven itself on saltwater species such as bonito, bream, mangrove jack, flathead, many trevally species, whiting, Australian salmon, tailer, snapper and mulloway. I have even caught garfish on a small floating version in a bread berley trail. I am sure in large sizes it would tempt our northern sportfish species like barramundi and threadfin salmon. Have also tied some size 8 version for trout and a little larger for native species who maybe focusing on shrimp around weed beds, no luck yet but that won't stop me trying again.

It can be tied in a variety of sizes and colours to match the local prawn sub-species. The materials to make the fly are readily available: Clear Silicone can be found at any hardware store, the eyes are flower stamens available at good craft stores, everything else is common saltwater materials readily available The Mustad hooks are hard to find at times as hook styles and availability are not as good as in the US, most of our Australian fly shops are still catching up and without the volume of turnover US stores have, so just ask them to get a box of the hooks in for you. Still most long shank hooks will do the job at a pinch all depends on your target species.

Materials List

Thread : 6/0 to 3/0 white Uni-thread.
Hook : Mustad 34011 - sizes 2 & 4.
(I have tied this fly in sizes as large as 4/0 when targeting the large snapper near Whyalla SA and in the Spencer Gulf, just like a large 3 - 4 inch king prawn.)
Feelers : White bucktail.
Antennae : A few strands of pearl Krystalflash.
Eyes : Black flower stamens for dried or silk flower arrangements, or black or dark green glass/plastic beads on mono stalks, even burnt mono dipped in black paint will do the job.
Legs : 2 - 4 white cock hackles, though if you can afford those long genetic saddle hackles, just one hackle will do the job.
Body : Clear Silicone.
Carapace : A very light layer of five minute epoxy, or 4 or 5 layers of clear nail polish.

Tying Sequence


1) Bend hook to form belly curve in shaft of hook.
2) Tie a bed of thread starting from hook bend to start of hook eye.


3) Take a bunch of bucktail twice length of hook (15 -20 hairs), tie in hair butts at hook eye.
4) Holding tips high and ensuring bucktail stays on tops of shaft wrap bucktail with thread for full length of shaft. Take thread back toward hook eye by about 10mm.
5) Tie in a few lengths of Pearl Krystalflash, trimming to 5 - 10mm longer than bucktail. Tie in eyes and splay outwards with a few careful thread placements.


6) Tie in cock hackle at hook bend.
7) Then use hackle pliers to wrap hackle around hook shaft. Ensure wraps very close to one another. As required add another hackle till shaft is full.
8) Tie off thread.


9) Trim top and sides of palmered hackles, if desired trimmed bottom at an angle from hook eye to hook point
10) The fly should look like this when looking along hook shaft from hook eye.
11) Wetting fingers in a container of water and dishwashing liquid, form a cone shaped lump of Silicone.


12) Press into top of hook shaft.
13) Ensure the silicone is pressed into the hook shank, thread and trimmed cock hackle.
14) There should be a little excess at head, by pinching & pulling this lump upwards and forwards from the hook bend you should be able to form a tapering body with a spike at the head of the fly.


15) Or just trim and shape as desired with wet scissors to the desired shape.
16) As silicone begins to set (5 - 10 minutes or so), wet your dubbing needle and form segments in body, 3 or 4 will do by pressing the needle into body top and sides. You have to keep wetting your needle with the water-dishwashing liquid mixture to stop silicone sticking to needle.
17) After silicone has partly cured (0.5 - 1+ hour depending on room temperature) mix a little five minute epoxy. Cover silicone with a very thin coating of epoxy or apply several layers of nail polish.
18) Allow 24 hours or more for silicone to set completely before use.

After a few attempts this body can be achieved quick easily. Don't worry about your poor attempts the fish will still eat them too even if they don't look right to you - save them for those rough structure areas like oyster beds and barnacle encrusted rocks. The pattern has subtle motion and all the key traits of the real thing. Right shape, right size, right feel, dominant eyes and plenty of "eat me" when stripped correctly.
Optional weed guard be added or tie fly with hook riding up but in step 1 bend hook the opposite way and open hook gape. Also add a strip of lead to the hook shank to encourage the hook point to ride up.

Variations include but not limited to - Injecting air bubbles into silicone to form sub-surface version. Add in a glass rattle for a dirty water version. Another version is to tie on feelers, eyes and flash then covering shank with chartreuse or pink LUMO tubing or beads then tying rest of the pattern over this. Then flashing finished fly with cheap camera flash for night work. Lots of possibilities, lots of fun. I am particularly found of the up riding hook and the grizzle hackle variations of the original.

Finished Patterns

Short shank version
Glass rattle version
Glow in the dark version (LUMO tube also avail. in green)
Grizzle hackle version
Egg sack version
Up riding hook version (lead strip on hook shank)

Fishing Notes

The pattern can be fished on intermediate, sink tip, floating or sinking lines. Regardless the fly line you use, the fly must be in the fish's strike zone. I cast it along the edges of weed beds and rock walls. Depending on the species a little minced prawn to establish a berley trail can entice the fish an aggressive mood into (which works extremely well on bream).

Shock tippet can be used but really depends on targeted species and terrain or structure you are casting around but this is a cheap easy to make fly so losing a few shouldn't break the bank. I normally do not use a shock tippet, as if I hook up to fish, I am happy - just crush the barbs of your hooks so the fly falls out readily when you get broken off. Most times I fish just a straight 1- 2 metre four kilo leader with a 17lb butt section a metre long. Retrieval methods are a personal choice, but I use a short strip, pause, short strip, pause method.

Enjoy the pattern, it has given me the 'first of' a few species. When the prawns are running, this is the fly I tie on, plus if the bream are not taking anything else they will take these (if induced by a little minced prawn at times).

** Fly Tyer 1997 Autumn Vol3Num3 P58 'Whisper Flies" by Leonard M Wright Jnr.

Copyright ©1999
Richard Carter


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