The sulphurs and little yellow stoneflies are producing great dry fly fishing on our mountain trout streams. Be sure to stay until dark in order to take advantage of the sulphur spinner fall. Both Big Wilson and Little Wilson have these hatches. Effective flies are the Murray's Sulphur Dry size 16, Shenk's Sulphur Dry size 16 and Murray's Little Yellow Stonefly Dry size 16.