In your neck of the woods....that is northern shield country, they can be a tough, tough nut to crack.
You're undoubtedly experiencing a very common post fall turnover lull.
When the lakes turn over in the fall the fish scatter and the bite becomes tough.
Once things settle down the bite is generally still tough.
Yes they'll invade the shallows on occasion (look for any sort of semi green weed.
Yes they chase suspended baitfish and you can catch them trolling.
However the best advice I can give considering where you're from is fish DEEP with oversized live minnows.
Possibly deeper than you've ever fished before.
Many if not most of your favourite "classic" walleye spots, (points, saddles, humps) in 15-25' depths will seem devoid of fish. You'll fish hard all day at this time of year and come up empty.
That's because you should've been fishing depths of 35 up to 50'
You'll need a good stiff rod and braid of some kind. Easiest way to rig is a large jighead with a stinger hook.
Last week of September up at my camp I had great success using 3-5" sucker minnows on 3/4 to 1oz heads with an appropriate stinger (if you don't use a stinger you'll miss most fish 'cause of the minnows size).
I was fishing a deep clay/sand flat in water that was averaging 40' deep.
The problem fishing this type of water is obvious...if you reel the fish in too fast their air bladder will be sticking out their mouth. You have to try and reel the fish in slowly to avoid this.
If it happens you either have to keep the fish or "fizz" the bladder with a hypo before release.
I'll be up there this weekend and I can guarantee you I'll be catching 'eyes hand over fist using the exact same techniques.
Should note: use your fish finder on manual with the sensitivity punched up a bit and search for the fish.
Spend some time combing the bottom 'till you find decent concentrations of fish, then break out the minnows.
As an alternative to live bait sometimes jigging spoons work wonders. Fished clean right off the bottom, as vertical as possible with sharp snaps...the hits are violent.
Good luck man.