If it were me, I’d try the northern point, within the right side of the dotted circle and in between the number 9 and 12 and right above the little fish mark. I would set up in the deep and tip up in the shallow (or other war around). Walleye seemed to come from deep to shallow to feed in my experience. And u want to find their easy path up and down. That’s why u look for breaks in the shape of “U” or “V”. Also lake seems shallow, so maybe just not many there. Good luck