I think, and it has been shown, worm like flies can be effective for bass. Unless you like chunking lot of split shot and have a lot more patience than I do, you are going to need to target the bass when they are shallow. But along weed lines you should be able to catch some fish, I think I still have a foam floating snake head to be used with a plastic worm that could be made into a fly. I have never fished streams for smallmouth but I would think drifting them along seams would be effective.