plus in deeper water you can run your lures at different depths to start with to find what depth the crappie are holding at and when dialed in , reset all to the same as you are getting the most bites. in the shallower water it gets the bait away from the boat and doesnt spook the fish ,or if you go over the fish ,the boat pushes the fish out to your baits. today we were catching fish in 3 ft or less running between 12 to 20 inches behind the boards. thanks guys for the deepth finder class, i really appreciated it