Frome: Three Dusk Beats for Brown Trout
River Frome above Dorchester: three dusk beats for brown trout

The River Frome above Dorchester holds a strong head of wild brown trout and browns over 2 lb are a realistic prospect on the right beat; one private stretch runs a little over a mile with islands, bridges and classic hatch pools.
Undercut banks are the first secret. Brown trout hug the cut-in edge as cover and ambush, especially where a soft seam or foam line rides tight to the bank. A precise cast so the dry fly drifts within a rod‑length of the lip will force takes from fish that vanish when light goes.
Tail-outs below pools and riffles are the second lie. As dusk falls trout move from deep buckets into shallower tapering water to pick off emergers. On Frome beats with hatch pools and structured glide water, fishing the run‑out from deeper to shallower will find active fish in the last hour of light.
Evening caddis seams and rig
Evening caddis seams form where faster current meets slick water and weed edges, creating a conveyor for adults. Chalk‑stream trout sit on the edge of that current; a well‑presented caddis pattern through the seam beats fishing the main flow every time.
Practical setup: a long leader of 12–15 ft with fine tippet, dry fly patterns in #14–#18 and a slightly larger option for aggressive takes. Fish the final 60–90 minutes before dark and expect the fizz of a caddis‑twitch in the last pink light.
Recommended: assorted dry flies