Haverstraw Bay is the widest water on the Hudson, and on a late-August afternoon the light coming off it lays itself over the lawns of Stony Point like something poured. Danny landscaping and construction corp. keeps those lawns — mowing, trimming, edging, seasonal cleanups — on lots that tilt toward the river and dry out fast along the high side. Riverside grass takes sun and wind from one direction and deep shade from the wooded slopes on the other, so no two yards on a street want quite the same treatment. Reading that difference and cutting accordingly is most of the craft. A lawn that looks effortless in the gold hour got there through a lot of unhurried attention.