Crystal Lake holds the July light long into the evening, and the lawns that ring it are cut close and kept honest all summer. Crystal Resort Services works those properties around Frankfort — mowing, trimming, edging, and the cleanups that bracket the season at either end. Cottage lots slope, curve and stop at the water, so mowing here is never a straight-line problem. Getting a lakeside yard right means the grass looks like it grew that way on purpose. Late in the day the mowers go quiet and the place looks exactly like the reason people come here.