I've fished the big rivers for years, but pretty much avoided the wing dikes when the water is up over the tops. Mostly because of the current and depth (and trash), but have always wondered about whether the cats still find the seams and current flows as they are at normal levels. Does the water over the top affect the current behind the dike at the river bed, or just the top? And how does it affect the fishing on the sand flats downstream? Are the seams even there when the water is up and over? Thanks in advance!