Bass will hit various horizontal/moving baits all season long, but in the natural waters that I usually fish here in the Midwest, the middle of summer also means peak weed growth. Heavy weeds mean that a crankbait, spinnerbait, or bladed jig are all harder to fish, particularly when targeting the weedlines and adjacent flats that often hold largemouth in good numbers. When fall comes, however, the weeds die and diminish, meaning those fish-holding areas are easier to work a bait over and through.