FI is correct about the crappies, but I caught 50 today!
Evening, usually 7PM until 9PM, the crappies and white perch swim on the top. A fly rod in a canoe with small streamers would work great.
Now the crappie spawn is almost over and the fish seem to be in 20' of water...... in lakes. Same thing with the perch.
I hate to say it, but I had to switch to a UL spin to keep catchin'
I use 2 lb NanoFil (.002 diameter) and super small 1" soft plastics on a 1/64 oz jig head.
I still love my fly rod, but in deep water, in a canoe, you just have to "threadline" to catch a lot of fish!