Using a fly rod for smallmouth bass is a little more popular than targeting largemouth bass with a fly. The reason is simple: Smallmouth bass thrive in many rivers and streams. Trout anglers love fishing rivers and streams, so switching to smallmouth bass doesn’t require them getting out of their comfort zone. Smallmouth bass can be caught in a lot of the same places as trout. Current breaks, undercut banks, pools, and even the main current areas will hold smallmouth bass. Poppers, hair bugs, streamers and hellgrammite flies work well for smallmouth bass.