With flows coming out of Palisades Dam just under 9000 cfs, the river is in ideal shape for fishing. Fishing banks remains the most productive strategy. Try hopper and chernobyl patterns trailed by a cinnamon ant (#14-#12), and place them close to grassy banks, undercuts, and overhead cover. If you want to fish riffles, late afternoon are best when caddis begin emerging. If you do not get surface action, try soft hackled patterns in size 12-16 such as partridge and orange, partridge and green or badger and orange. Let them drift down a few inches to working fish. When your fly arrives in the area where fish are working, lift your rod tip to raise the fly toward the surface. An evening PMD spinner fall can bring some action to riffles.
Many fly fishers have forgotten how effective a #12 or #14 renegade is on the South Fork. Too bad: because fished as a dry fly or emerger it fly remains extremely effective up and down the river. Try it in riffles or drop it against the same features you fish with hoppers or chernobyl types. So for many folks it may be out of style, but for those few in the know it remains a stalwart pattern. Maybe you should give a try especially if you believe that fish get use to seeing patterns that are presented over & over again!