When fish are holding tight to structure, cast to the shallows from a boat positioned just off the deeper edges to locate active fish. A hopping retrieve from the shallow flats to the depths beneath your boat imparts a leaping motion to the lure, which should come into contact with the bottom between each short jump. After each hop, allow the lure to flutter back to the bottom on a controlled slack line. Once the blade bait is worked back to below the boat, employ a vertical jigging action, allowing the lure to pound the bottom, sending up clouds of silt or ticking off gravel to attract fish in the area. Once you determine the depth at which the active fish are holding, focus on the most productive blade presentation, be it vertical-jigging or casting.