Slide diver help WAY OFF! in Tackle and Techniques Posted April 29, 2021 Any chart is just a snapshot in time. Currents, line diameter, and speed will greatly alter the depth of any lure being dragged in the water. Smart Troll is the only device that will give the the answer you are looking for all day, everyday! Fish Hawks’s TD is a decent starting point but then again so are all the charts out there.