Start with Diawl Bach (12-14) — on the bob / top dropper — slow figure-of-eight retrieve. Midday in warm weather — switch to a fast-sink or Di-7 and fish boobies or blobs along the bottom. Rainbows respond to more active retrieves — try short strips between pauses.

Fish early and late, try deeper during the heat of the day with a fast-sinking line.

Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.

Bank fishing near inflows, dam walls, and weed beds. Move to find feeding fish.