3 CDC Mayfly tied on Kamasan B830 size 10 and 12 hooks. These hooks are incredibly strong and are capable of landing any fish the UK will throw at you.
Best fished as a dry fly on a floating line with 8-16 ft of fluorocarbon depending on the body of water you are fishing. If you see rising fish, cast above them and let the fly move naturally in the current or ripple. If nothing happens often 1 quick pull or tweak will get the fishes attention.
Fishing dry fly is great fun and this pattern is great for still water trout especially during a hatch of flies. I often have great success when fishing a sedge hatch but it excels during a mayfly hatch catching beautiful fish.