I’m not the most tech-savvy guy on the Wired2fish staff if you haven’t realized it by now. So I’m going to keep this section simple and talk about two things you can do without thousands of dollars in electronics.
As I mentioned earlier, a Carolina rig is a great way to find this type of cover. I like to use a 1/2-ounce tungsten weight because the density and hardness of the tungsten results in higher sensitivity for the angler. I’ll throw parallel to the fronts of docks, parallel to grass lines, to the sides of points and other small “knobs” or current breaks and drag that Carolina rig as slow as I can stand it.
It’s important to note that I’m not doing this to get bites. I’m simply using this old-school rig as a way to feel the bottom. When I come into contact with some type of bottom transition or hard cover, I make a mental note or a GPS waypoint and come back to it a few days later.
Another technique I’ve used a lot to locate this secondary cover is using a medium-diving crankbait on 10-pound fluorocarbon and a medium-action rod. The smaller-diameter line helps that crankbait dive deeper and the lighter-action rod helps me make longer casts and “search” more efficiently.
Now, you might actually catch some fish doing this but again, I’m not too worried about that while I’m in search mode. I’m making the exact same casts as I would with the Carolina rig and making notes of every deflection off hard cover I feel as the crankbait dredges the bottom.