There are some really good suggestions on here. Like usual, I agree with @smalljaw67. I fish the North Branch a bit further upstream pretty regularly and crankbaits are some of my favorites for covering water, especially while working shorelines, 3-6' runs, and tailouts. I have always loved Rapala's Fat Raps, and have really, really grown to like the DT series. DT 4,6, and 10s have boated me a lot of fish in the last 2 years. They deflect extremely well and by swapping between depths, I've found that I can cover a ton of different retrieves, whether the smallies prefer something lightly nicking the tops of boulders or something dredging gravel.
During the summer and through the fall, I will always have at least one crank bait rod on my kayak. There's lot of good advice on here already, but I'll add a few. During the day, especially bright days during the heat of summer, the very heads and tail outs of pools can be incredible patterns as fish will often hold just a little bit deeper. Having something that runs a little big deeper here can be clutch and a great way to pick up big fish. Also remember, predators are generally going to prefer a presentation that mimics baitfish moving WITH the current versus against it. (it's more natural, fewer spines to deal with, etc). Another great time and place to fish a crank bait is along weed edges in the mornings and evenings. This can be a great way to catch big fish, as (in my experience) this is when you're most likely to find larger fish, typically 16"+ crashing shallow weeds chasing baitfish, frogs, mice, crayfish, and anything else roaming the shallows as daylight begins to fade. This is also another time when poppers and prop baits like @fishnkamp mentioned shine. In 2017, the Whopper Plopper 90 also really earned my respect in these conditions.
A few notes for fishing crankbaits in fast, turbulent water: Bulk and noise can be good things. These are going to be super active fish if they're holding in the fast stuff, even if they're stacked behind a giant boulder. The water is going to be fast and loud, so don't be concerned about rattles and subtlety. The good thing about KNOWING that these fish are going to be super active, means you can fish big, wide wobbling baits (Those big, fat Normans someone mentioned above can be GREAT here).