Montauk residents renting out their homes and living in trailer parks for the summer. Hey, pay $18,000 in rent, collect $60,000, what’s not to like? I once came somewhat-seriously-close to doing that on Martha’s Vineyard, where a summer rental would more than cover a modest mortgage. Live on the island for ten months, flee during the summer when no one with any sense wants to be there anyway, and pocket the cash. Renting to strangers isn’t much fun, but at the right price ….