I would try an ultralight-medium light spinning rod throwing jig head streamer flies, small crankbaits, and super fluke juniors. Can into the slow current and just hop the streamer along. Throw across the slower current with the crankbait and slowly reel it across the current. As for the fluke you should put it on a heavier jig head and cast it into the faster white water. Just erratically shake it so it looks like a disoriented baitfish. Also try the fly on each side of the fast water and sort of imagine the fast water as a weed bed and you are fishing the edges. Just what works for me. Hope it helped!