Three dusk seams on the River Test
Stockbridge stretch: three dusk seams on the River Test

On the Test, brown trout move with the last light into tight tail-outs, bank seams and the small carriers that keepers prize. The classic evening window is brief: the last flush of dusk when trout quit daytime lies to pick drift in low-energy lanes.
Beat 1 — tail-out seam below a glide
Target the final 0.5–1.5 m of depth where faster water spills into calmer tail-outs. Trout hold there to intercept concentrated food. Fish with a 9–10 ft 4-weight rod, a 12–15 ft leader and a small nymph or soft-hackle in sizes 14–18, working upstream for drag-free drifts.
Beat 2 — shallow bend-run with cover
Look for a 20–40 cm shelf tight to an undercut bank or root system. Large browns will sit under cover and move into the bend-run as light fades. A small streamer or caddis imitation fished close to the bank can provoke bold evening takes.
Beat 3 — side-water and carrier
Quiet carriers and little backstreams collect drift and lower the pressure. Use a 7.5–9 ft leader, 5X–6X tippet and unweighted or lightly weighted patterns to avoid spooking fish that cruise from the main river into the side-water.
Expect increased surface activity and short, sharp takes in the last minutes of dusk; a trout sliding upstream through a dim seam is the surest sign the Test is feeding its own.
Recommended: trout nymph selection