They love roosting close to water. That is why they are by the pond. Move your blind closer by about half the distance if you can or even closer. Then just wait for him to show back up and he should walk back in to roost right before dark, that is if he makes it past you. The hens usually walk in and fly up first, and he may stay out in the field until the last few minutes of daylight to give himself as much visibility possible to attract any hens in the area. Just be there before he shows back up and be patient. A small jake decoy in one of his strut areas may be helpful too if you have one. My jake decoy got beat up last weekend. Be patient and good luck.