alright...

A looks like a nice flat area that comes right off that channel....if you can find some humps in that area or some vegetation, running cranks is what you are after....spread it out with some planer boards...

B for me i would look for fish right now....steap enough drop off...this is kind of like a funnel for baitfish and you will find walleye....look for schooling baitfish.. i like jigging minnows or tails in these areas...

C not sure if thats a hump or not....if its a hole, nevermind, but if its a hump, hit it just like A.

D this spot intrigues me but i'm not sure if those are humps or not....