RIO's Morrish May Day Hook Size:13 RIO's Juicy Stone pushes the

RIO's Juicy Stone pushes the boundaries of a realistic fly that is very fishable

a stonefly/hopper and a caddis

Caddis are prevalant in most rivers so having a good pupa/larva pattern in your fly box is key

reliability

or larger river trout rod

RIO's Morrish May Day Hook Size:13 RIO's Juicy Stone pushes theAfter 40 years of observing mayfly duns on the water and comparing them to the flies we imitate them with, I had a simple but somewhat profound revelation. Duns sit on the water not in the water. Their bodies don't touch the water and their tails are nowhere near the surface. When fish look up at duns, there is nothing more than a light semi round impression of the insect, and that impression is far smaller than the impression of a typical parachute