Drive up the Gros Ventre and fish Crystal Creek. I fished it a few times a summer when I lived there. Don't overlook Flat Creek on the elk refuge. It's open in August. Those fish are a bit more challenging than the GV. Hoppers for the dumb ones in the GV. Technical drys from local shops for the smart ones in Flat Creek. More info available if you want it.
Crystal got blown out a couple years back. Was off color and high most of the summer. Has not fished the same since. Still a beautiful day hike though.
