There are millions of objects that are in the water, if the fish does not see it as food , it want hit it or care . Yes if the fish are really deep drop shot is not my first choice . Slip cork, jigging, cast and retrieve , vertical jigging would all be better in my opinion . To drop shot you still need the bait above the fish . Weather that is 5 ft. off the bottom or 10 ft. .Drop shot is a great method for high barometric days . jmo