Fall is different than spring.
In the spring the walleyes are attacking everything in sight with a vengeance. I don’t thing they’re necessarily in the mood for eating but the seem to attack just about anything. The one main thing to identify is current breaks. The big fat females are looking for the path of least resistance to head up river and spawn. I almost exclusively cast at a 90 degree angle and pull across the current with a 5/16 or 3/8 jig during normal flow. Bigger plastics like pulse-r or moxies. Plastic is way better than live bait, for me. I quit bringing meat two years ago.
When I say current breaks, I mean inside turns of the river where the water is just slightly slower than the rest of the river. These areas are typically very large and can be the size of a couple football fields. They can be tough to spot if you don’t know what your looking for.
In the fall its a similar deal but I think that slack water like eddys are even better. The IDO crew did really well fishing the sand dunes. Basically sand bars that fluctuate in depth 3-4 feet like waves. The fish settle down in those waves to get out of the current. Watch your sonar for a wavy bottom when you’re on plane traveling from spot to spot.
I found frozen shiners and fatheads outfished plastic about 10:1. The presentation is much slower as well. I cast out at a 45 degree angle and let the jig drift behind the boat while anchored. Then slowly lift and retrieve or slowly lift and fall and wait for the fish to come to you. Much more subtle than in the spring.
I’m making plans now to go up at the end of the month. Looking forward to my last big trip before the new baby.