Start with Coch-y-Bonddu Beetle (10-14) — on the bob / top dropper. Early in the day, try buzzers on a slow figure-of-eight or a booby on a fast-sink line near 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.

Good ripple suits both bank and boat. Bank: work inflows, dam walls, and points. Boat: broadside drift covering wind lanes.