Cover

Great question William. Sometimes when you drive directly over the structure the fish will hide tight to the cover or scatter away from the range of you sonar cone. Either way you won't see them on 2d. If the cover is in a good position and you see bait in the area, I will make a few casts. If it really looks good to me I will stop back later and give it another shot. So my answer is yes, I will sometimes still fish the cover even if 2d doesn't show fish.