Long line trolling cranks parallel to the wing dams can be pretty effective at times. Generally I start near the shore, cast the crank bait upstream of the wing dam, and start trolling towards the channel. I’ll bring the boat closer to the dam until I start to tick the rocks and then hold that boat distance above the dam. If I start pounding the rocks too hard, I’ll move upstream from the dam a bit or reel in some line. Snagging up is almost a certainty if I’m hitting the rocks too hard. Just a light tick seems best. Or you don’t even have to tick the rocks… just get the crank down somewhere close to the dam.
Medium deep drivers to shallow running stick baits work fine. It all depends on the depth of the dam and the amount of line you have out. If you want to fish the top of a shallow dam, shallow divers are best. If you want to fish the base of a deep dam, then you’ll need a deeper diving crank.
This technique is much easier to do when one can see the ripple line of the wing dam to aid in boat positioning. I don’t even try this when it’s dark.
Boone