If I were truly serious about this capture, I would camp out down there for as long as it took. I would have a modest campfire, set out copious amounts of food around the camp, some of it closer than others. If you know what direction he comes from, make a trail of food to the camp. Singing a few campfire songs around the fire couldn't hurt.
Or find a bitch in heat and camp with her in a kennel. Or use a jar of her piss appropriately.
I'm not kidding.