K-Bouy area

Find a place (about 1-1.5 miles S or SE of 42)in the middle of the sound with a flat sand/mud bottom, no structure, no humps, no weeds as best as I can tell with my cheap depth finder, throw out some bunker chunks and chum and catch stripers in the spring and blues right now. How can it be. I always thought you need to find a drop-off, rock piles, mussle beds, shallows near deep water or vice versa. Why should this spot be productive? I'd think it would be the least productive spot in the sound. Anyone have any clues?