9ft of insane rapids? lol
You'll want a monster float (11-14g) and a lot of shot right above your tippet (Even some dust shot on your leader never hurt)
The thing is, you don't want to fish IN the fast water, you want to fish the seam right besides it..
And like Stonefly said earlier, fishing this type of water is a bit tricky.. You'll feel the hits before you actually see the float go down.
You need to make sure you are trotting (keeping the line a bit taught as the float goes downstream) and pay attention. Any time the float bobbles, or does somethig funky, set the hook..
These hits are extremely easy to miss. I had a hell of a day a few weeks ago fishing similar water.. After a few tips from a buddy the next time out, nailed a bunch.