August evenings out toward Long Beach and Cape Hedge, the heat lets go around six and the grass takes on that deep late-summer color. The Lawn Guys are usually finishing then — the week's mow done, trim lines tight to the foundations, drives and walks edged, beds cleared out. Rockport lawns spend the whole summer taking wind, salt spray and foot traffic, and keeping one even is a steady, unshowy business. Cleanups bracket the year on either side, in April and again in November. What is left behind after each visit is a yard that looks like somebody meant it.