The South Fork is on track to shape up a little earlier this year and is already fishing well. There are Salmonflies down towards the confluence of the Henry’s Fork so try an Elden’s Pteronarcys or big orange Chubby.  Nymphing and streamers are still productive, but dry fly action will continue to pick up. The reliable Rubber Legs with a Hares Ear or Duracell dropper is a good place to start, but stay prepared with Stonefly and Drake patterns as well. Idaho Department of Fish and Game encourage the harvest of rainbow trout on all stretches of the South Fork. This is to protect the native Cutthroat trout. There is no limit on rainbows and some have monetary reward tags in them. If you do harvest any rainbows, take the head to the regional IDFG office in Idaho Falls and they will scan it to see if there is a reward tag. The max reward is $1000.