Good to see 1st Street Rapid kickin em out!! Some of your other pics looked like Big Eddy, Dillon or Benham areas?? (Good spots!) A buddy I work with said he saw "some guy" catching big browns with rapallas down there. With the buggers you could get a sinking line and fish them, well, like streamers!! There are some other streamer patterns that I think would do really well down there but you may need a switch rod to get them out enough.
So strip em like streamers!!! (Retrieve retrieve stop, ect..) I tie mine pretty heavily weighted so they drop quick without that pesky split shot. Bait fish patterns I bet would cleanup down there as well as crawdad patterns. I though about miceing for them some time in the evening but I usually don't fish around town unless I'm really Jonesin'
I think about anything to Pi$$ em off would be the trick to inducing a strike as well as a big meal! Hey I just may run into sometime. I'll look for a guy fightin a big fish!
Cheers!