Granite Pool Trico Spinner

by @dekasso

Trico Spinner · Dry fly

White wings spent on still morning water

A size 20 Trico spinner with white spent wings and a black thread body, for trout sipping the morning spinner fall.

A tiny Trico spinner with white wings laid flat and long split tails. Its slim black thread body carries a fine silver rib, finished with a spiky black thorax.

Pattern
Trico Spinner
Imitates
Trico spinner fall
When
typically late-summer and early-autumn mornings
Hook
size 20
Tippet
7Xrule of three
  • White poly wings lie fully spent
  • Split microfibbet tails for balance
  • Black thread body with silver rib
  • Size 20 dry-fly hook
  • Built for the Trico spinner fall

On the water

A dry fly riding the surface of a trout river

Two bright white wings stretch out flat from a small black thorax. A slender black body with a thin silver rib runs back to split white tails, long and fine as whiskers. Behind it, a clear mountain creek slides past grey granite and winter grass.

Fish it on slow flats and tailouts when spent Tricos carpet the surface and trout rise in steady little sips. Cast a short drift above the riser and let it sit dead still in the film, with no drag at all.

Poly yarn wings need figure-eight wraps to lie dead flat. Cross the yarn over the shank, lock it with tight X-wraps, then dub the thorax over and under so the wings stay spent and level.

A coiled leader, tippet spools and an open fly box on slate

Rigging

Tippet
7Xhook size divided by three
Leader
Nine feet, tapered — longer and finer in flat water
  • Rig on 6X or 7X tippet with a long, soft leader to keep the drift natural.
  • Fish it flush in the film; a light touch of floatant on the wings only keeps the body low.
  • Make short casts to a single riser and time the drift to its rhythm.

Where and when

The South Platte River
Water
South Platte River, Colorado Front Range
Hatch
Trico spinner falltypically late-summer and early-autumn mornings
Target
Trout
Water type
Slow flats, tailouts and glassy pools on tailwaters and spring creeks
Also fishes
Also fishes any slow water with tiny dark spinners or midges on top, and works as a calm-day searcher on still pools.

Also on this water

  • MidgeJan–Mar, Nov–Dec
  • Blue-Winged OliveMar–Apr, Sep–Oct
  • TricoJul–Aug

Fished out of Deckers, Lake George and Fairplay.

Make it yourself

Intermediate5 materials · 10 steps

Pattern
Trico Spinner
Style
Dry fly
Hook
Standard dry-fly hooksize 20
Thread
Black 8/0
Fly-tying materials laid out on a dark bench

Materials in the order they go on the hook

  1. TailWhite microfibbets
  2. RibFine silver wire
  3. BodyBlack thread
  4. WingWhite poly yarn
  5. ThoraxBlack superfine dubbing

Details

Imitates
Trico mayfly spinner
Colors
Black, White, Silver
A fly-tying vise holding a bare hook on a wooden bench

How to tie it

The steps, from first wrap to whip finish (10)
  1. Mount the size 20 hook and start the black thread one eye-length behind the eye, then wrap a thin base to the bend.
  2. Build a tiny thread ball right at the bend to split the tails.
  3. Tie in two or three white microfibbets on each side of the ball so they flare apart, about one and a half shank lengths long.
  4. Tie in the fine silver wire at the bend.
  5. Wrap a slim, smooth thread body forward to about two thirds of the shank, tapering slightly thicker toward the front.
  6. Wind the silver wire forward in four or five open turns, tie off and trim.
  7. Lay a short length of white poly yarn across the shank and lock it with tight figure-eight wraps so both wings sit flat out to the sides.
  8. Dub a pinch of black superfine onto the thread and wrap a small thorax in figure-eights around the wing base.
  9. Trim each wing to about one shank length, cutting straight across.
  10. Form a tiny neat head behind the eye and whip finish.
Proportions (4)
  • Tails: about one and a half times the hook shank, split wide.
  • Body: slim thread over the rear two thirds of the shank.
  • Wings: each about one shank length, set level at right angles to the body.
  • Thorax: small and round, no wider than the wing base.
Tips (4)
  • Keep thread wraps flat by spinning the bobbin to untwist it before wrapping the body.
  • Comb the poly yarn fibres with a fine brush before trimming for a crisper wing outline.
  • Use very little dubbing; a sparse, spiky thorax suits the profile.
  • Trim the wings after tying so both sides match exactly.
Common mistakes (4)
  • Wings that cock upward: lock them with more figure-eight wraps before dubbing.
  • A lumpy body: use fewer, smoother thread wraps and keep the base flat.
  • Tails that roll together: make the thread ball firm enough to push them apart.
  • Crowding the eye: leave one eye-length bare at the start.
A dozen-fly materials kit laid out on slate with its recipe card.
The kit

Every kit size

Materials only

Size 20 · Materials only · 12 flies

$26.65

$2.22 a fly

Includes Standard dry-fly hook · and 6 more

Every item in this kit · 7 items

Hooks & beads

  • Standard dry-fly hook$6.501 × 25 · size 20

Thread & wire

  • Black 8/0 thread$2.951 spool
  • Fine silver wire$3.251 spool

Materials

  • White microfibbets$3.501 pack
  • Black superfine dubbing$4.501 dispenser

Finishing

  • Head cement$5.951 bottle

Guide

  • Printed recipe and tying stepsIncluded1

Size 20 · Materials only · 48 flies

$41.90

$0.87 a fly

Bought separately $44.10 · you save $2.20

Includes Standard dry-fly hook · and 6 more

Every item in this kit · 7 items

Hooks & beads

  • Standard dry-fly hook$132 × 25 · size 20

Thread & wire

  • Black 8/0 thread$5.902 spools
  • Fine silver wire$3.251 spool

Materials

  • White microfibbets$72 packs
  • Black superfine dubbing$92 dispensers

Finishing

  • Head cement$5.951 bottle

Guide

  • Printed recipe and tying stepsIncluded1

Size 20 · Materials only · 144 flies

$91.43

$0.63 a fly

Bought separately $103.90 · you save $12.47

Includes Standard dry-fly hook · and 6 more

Every item in this kit · 7 items

Hooks & beads

  • Standard dry-fly hook$351 × 100 + 2 × 25 · size 20

Thread & wire

  • Black 8/0 thread$17.706 spools
  • Fine silver wire$9.753 spools

Materials

  • White microfibbets$17.505 packs
  • Black superfine dubbing$184 dispensers

Finishing

  • Head cement$5.951 bottle

Guide

  • Printed recipe and tying stepsIncluded1

With vise & tools

Size 20 · With vise & tools · 12 flies

$176.65

$14.72 a fly

Includes Standard dry-fly hook · and 15 more

Every item in this kit · 16 items

Hooks & beads

  • Standard dry-fly hook$6.501 × 25 · size 20

Thread & wire

  • Black 8/0 thread$2.951 spool
  • Fine silver wire$3.251 spool

Materials

  • White microfibbets$3.501 pack
  • Black superfine dubbing$4.501 dispenser

Finishing

  • Head cement$5.951 bottle

Tools

  • Rotary pedestal vise$791
  • Ceramic bobbin$141
  • Fine-point scissors$161
  • Whip finisher$91
  • Hackle pliers$71
  • Bodkin$51
  • Bobbin threader$41
  • Dubbing wax$41
  • Canvas tool roll$121

Guide

  • Printed recipe and tying stepsIncluded1

Size 20 · With vise & tools · 48 flies

$184.40

$3.84 a fly

Bought separately $194.10 · you save $9.70

Includes Standard dry-fly hook · and 15 more

Every item in this kit · 16 items

Hooks & beads

  • Standard dry-fly hook$132 × 25 · size 20

Thread & wire

  • Black 8/0 thread$5.902 spools
  • Fine silver wire$3.251 spool

Materials

  • White microfibbets$72 packs
  • Black superfine dubbing$92 dispensers

Finishing

  • Head cement$5.951 bottle

Tools

  • Rotary pedestal vise$791
  • Ceramic bobbin$141
  • Fine-point scissors$161
  • Whip finisher$91
  • Hackle pliers$71
  • Bodkin$51
  • Bobbin threader$41
  • Dubbing wax$41
  • Canvas tool roll$121

Guide

  • Printed recipe and tying stepsIncluded1

Size 20 · With vise & tools · 144 flies

$223.43

$1.55 a fly

Bought separately $253.90 · you save $30.47

Includes Standard dry-fly hook · and 15 more

Every item in this kit · 16 items

Hooks & beads

  • Standard dry-fly hook$351 × 100 + 2 × 25 · size 20

Thread & wire

  • Black 8/0 thread$17.706 spools
  • Fine silver wire$9.753 spools

Materials

  • White microfibbets$17.505 packs
  • Black superfine dubbing$184 dispensers

Finishing

  • Head cement$5.951 bottle

Tools

  • Rotary pedestal vise$791
  • Ceramic bobbin$141
  • Fine-point scissors$161
  • Whip finisher$91
  • Hackle pliers$71
  • Bodkin$51
  • Bobbin threader$41
  • Dubbing wax$41
  • Canvas tool roll$121

Guide

  • Printed recipe and tying stepsIncluded1

The creator

An illustrated portrait for Dekasso (an illustration, not a photograph)

Dekasso

@dekasso

Wherever the truck rolls to a stop.

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