Wooly buggers fished on a sinking line are still one of the most effective methods. Fish them deep and slow. Small nymph patterns are also working. Some dry fly action is also possible early or late. Try a small Griffith's gnat or Adams.
Abundant chubs are a problem here.
As the sun falls below the equinox, Lake Powell surface temps are sinking and fish are actively feeding in preparation for a winter's dormancy. This week water temps enter the 60's, causing black bass to move shallower and stripers to set camp on wintering grounds. Stripers are still being caught consistently in the backs of most major canyons, in about 50-60 ft of water. Fish will move shallow in the evening and morning in search of forage and drop down into the depths in the midday for some rest and relaxation. Limited boils are occurring, just where stripers are finding shad.