You need to find where he's living, not just where he's feeding. The rut is the great equalizer. You will catch mature bucks roaming during shooting hours. But outside of the magical rut window, I would tell you to get closer to where they live (thickets). You will start seeing bucks on the regular. Being this close to the rut, I would start watching rub lines & scrapes to see if you can key in on the buck you're looking for. But the doe's will be their primary concern here soon.