Flossing a Dragonfly Dry Fly for Stillwater Fishing

Dragonflies are a major food source around Australian dams, farm ponds and high-country lakes. When adults patrol the margins or tumble onto the surface, a well-proportioned imitation can draw aggressive takes from trout, bass and other warm-water predators. A dragonfly dry fly also gives the fly fisher a useful pattern for covering open water when mayflies and caddis are quiet.

Flossing the body is the key to a clean, durable finish. The technique uses flat floss or a similar synthetic material to create an even, reflective abdomen without ridges or trapped fibres. On stillwater, where fish often have time to inspect a fly, that smooth profile can make the difference between a refusal and a confident rise.

Read The Water Before Tying

The best pattern begins with the insects found around the water you intend to fish. On Lake Eildon, Victorian farm dams and the Snowy Mountains, dragonflies vary in size and colour, but olive, tan, brown and muted blue cover many useful imitations. Bright flash can help in wind-chopped conditions, while subtle tones are better on calm, clear water.

Watch the edges during the warmer part of the day. Adults often rest on reeds, drowned timber and rocks before launching low over the surface. Trout may cruise the shoreline for fallen insects, whereas bass can sit beneath overhanging cover. Match the fly’s size to the naturals you see, rather than automatically tying a large attractor.

Select Materials That Floss Cleanly

Use a straight-shanked dry-fly hook with enough gape to hold a solid fish. Sizes 6 to 10 are practical for larger dragonflies, while a smaller 10 or 12 can suit dams where the insects are compact. A fine, strong thread, flat floss, closed-cell foam, deer hair or synthetic wing fibre, rubber legs and a reliable dry-fly hackle complete the basic materials.

Choose floss with a smooth, compact weave. Rayon floss produces a strong sheen but can separate if handled roughly; flat nylon or antron-style body material is easier for many tiers to control. Australian fly shops may carry different brands from season to season, and imported tying stock can become expensive once postage is added, so buy enough of a dependable colour for several flies.

Build A Smooth Floss Body

Start the thread behind the eye and run it to the bend, keeping the foundation slim. Tie in a short length of floss at the bend, then return the thread to the front of the body. The thread underbody must be level: lumps will show through the finished abdomen and encourage the floss to spiral.

Separate the floss strands with a needle or bodkin before wrapping. Keep the material flat, apply steady tension and make touching turns from the bend towards the thorax. Do not twist the floss as you work. Two thin layers are usually cleaner than one heavily tensioned layer, and each layer should be secured with a few firm thread wraps before the excess is trimmed.

For extra durability, brush a very light coat of flexible fly cement over the thread base before wrapping, allowing it to become tacky rather than wet. Finish the floss beneath the thorax, cover the cut end neatly and avoid bulky thread wraps. A neat abdomen should taper slightly towards the rear and leave room for the wings, legs and hackle.

Add Wings, Legs And Hackle

Dragonfly wings should sit upright or slightly splayed, with enough stiffness to remain visible after repeated casts. Two paired slips of clear synthetic wing material are easy to see in glare, while barred polypropylene or fine foam gives a more suggestive silhouette. Secure the wings with figure-of-eight wraps, then apply a small drop of resin or cement at the tie-in point.

Build a compact thorax from dubbed fur or peacock-style synthetic fibres. Tie rubber legs on each side, angling the front pair forward and the rear pair back. Keep the legs restrained; excessive movement can make the fly look like a toy and interfere with hook clearance. A few turns of quality hackle around the thorax provide flotation and help the pattern sit correctly.

A small foam strip over the thorax can improve buoyancy, particularly when fishing rough water or a sinking leader. Trim it to blend into the abdomen rather than forming a large hump. Finish with a neat whip finish, seal the thread and inspect the hook point, gape and wing alignment before applying floatant.

Present The Fly On Stillwater

Use a long, light leader when fish are cruising in clear water, but shorten it when wind, weed or heavy structure makes turnover difficult. A 9-foot leader ending in 3X or 4X tippet suits larger dragonflies and fresh fish; move finer when trout are cautious and the fly is small. Apply floatant to the hackle and thorax, not heavily to the body, so the abdomen remains low and convincing.

Cast beyond the feeding lane and allow the fly to settle without a hard pull. Short, irregular twitches can imitate a struggling adult, but stillness is often more effective immediately after the landing. On lakes such as Tasmania’s highland waters, long pauses between tiny movements can draw a trout from surprising distances.

Good presentation depends on balance, footing and controlled movement. The same attention to body position used during unconventional shooting positions helps when casting from a slippery bank, a low boat seat or an awkward reed-lined margin. Keep the line hand organised and lift the rod smoothly rather than snatching at a visible rise.

Field Checklist For A Reliable Pattern

Before heading out for an early-morning session or an afternoon arvo on a local dam, check the fly against a clear set of practical standards:

• The floss abdomen is smooth, tapered and free of crossed fibres.
• The hook point and gape remain completely unobstructed.
• The wings are balanced, visible and firmly secured.
• The legs move naturally without fouling the hook.
• The fly floats level after a few false casts and light retrieves.

Carry several versions in nearby sizes and colours. Wind, glare and water colour change quickly, especially on exposed reservoirs, so a dark brown model may outfish an olive one by midday. Keep a small drying patch or desiccant powder in the fly box, because a floss-bodied pattern performs best when the hackle and thorax are restored after each fish.

The finest dragonfly imitation is still only part of the system. A level body, restrained profile and sharp hook give the fly credibility, while accurate placement and a quiet pause let the fish complete the deception. Remember that successful stillwater flossing comes from a smooth abdomen, a balanced silhouette and patient presentation.