Trenton looks straight across the Narrows at the mountains of Mount Desert, and on a clear July day you can pick out Cadillac's granite shoulder from a good many dooryards here. BAYSIDE PROPERTY MANAGEMENT LLC keeps those dooryards mowed, trimmed and edged through the whole green run of the year. Tidal flats, salt wind and thin coastal soil make a lawn out here something you tend rather than something that simply happens. Spring cleanup pulls off the winter's wrack of twigs and sand; fall cleanup takes the leaves before the first real blow comes up the bay. A cut lawn with all that water behind it is about as good as a summer view gets.