Think of them as the guy that sits at the buffet for numerous hrs just slowly eating plate after plate until they are forced out of the feeding by some kind of significant force (manager) (mothernature). If they’re feeding is disrupted by a cold snap or by a major river level change then they will retreat back deep and not feed heavily again till mothernature steadys out for at least a few days straight. I tend to believe that fall time triggers some kind of false spawn habit for wallys only because the water temps are similar to spring patterns. I tend to catch alot more walleyes on the river and more saugs on the lake. Walleyes are usually on rip rap,on top of sharp sand breaks or points, or wandering shallow bays this time of year. Saugs tend to like current and deeper water all the time. When the current is fast and the river seems like it’s movin faster than normal I make sure to get as far out of the current as possible to find active fish.