One of my favorite trolling additions, a dredge helps create the illusion of a baitball in the water column. I fish a dredge off each cockpit corner of my 28-foot center console, and they complement a surface teasing arrangement of a spreader bar and a large hookless lure.
The sight of two 96-fish Stripteaser dredges unfurling in the water is exciting. They're fished just far enough back and just deep enough that we can still see them and can react to any fish that comes in on them. Usually, that sweet spot on my boat is about 15 feet back and about eight to 10 feet deep. We've had dolphin as large as 40 pounds come up in these dredges. And interestingly enough, they work equally as well when we're shut down and catching school fish - just cleat them tight to the transom, where they'll flutter and reflect light just underneath the boat.