If you can, fish on a weekday. The Bitterroot's trout range from 10 inches to four or five pounds. An average fish measures 14 inches. Skwalas are size 8 or 10 light brown and olive insects that drive trout crazy. The Bitterroot is best drifted in an inflatable raft or hard-bottom drift boat during spring.
Warm afternoons provide the best skwala hatches.