The fishing has been good on the Henry’s Fork. The Salmon flies are finished, but the Golden-stone fishing has been good from Stone Bridge down to Fun Farm bridge. Also in that section, I would start to look for Green Drake and Flavs from mid-day on. There has been a good pmd spinner fall in the morning and then with good Caddis fishing right before dark. Finally, if all else seems to fail for dry fly fishing, you could put on nymphs and fish the slots and rocks out in the middle of the river.
Flies that I would use on the those sections are:
Super Chernobyl Golden Yellow size 8 & 10, Olive Hares Ear Parachute Adams size 12, D&D Cripple Green Drake size 10, Rusty Biot Spinner size 16 & 18, Improved X Caddis Tan & Olive size 14 &16
Pats Tan/Brown Rubber Leg size 8, Red Copper John size 16, Psycho Prince size 18, Crystal Golden Stone size 10