The water side of this town is a summer country: Peabody Pond and Hancock Pond flat as tin at six in the morning, the northwest arm of Sebago Lake turning silver by ten. OPN Dock & Yard LLC keeps the yards that face all that water — mowing camp lawns right down to the shore edge, trimming around stone steps and fence posts, hauling the leaves off once the swimming is done and the loons have gone quiet. Then the season flips and the same lanes need opening: plowing camp roads and driveways so a family can reach the place in February and find it waiting. A shoreline lawn cut even and low makes the water look bigger than it is. That seems a fair trade for a morning's work.