Top spots include Carbella access on the Yellowstone, and Swinging Bridge on the Boulder River. Shore access is excellent, though drift boats enhance river coverage. Hot areas include river bends, confluences, and riffles. Species include rainbow, brown, and cutthroat trout—use dry flies (summer), nymphs (spring/fall), or streamers (low light). Fishing peaks May–October. No piers or ramps; use gravel pull-offs and designated FWP sites. Check regulations for seasonal closures and fly-only zones. Verified via Montana FWP, local guides, and fly shops.