Visit to Florida turns up Key economic indicator Who would have thought that we'd discover a new economic indicator? The source of the indicator is Pam, the owner/proprietor of Treasure Harbor Marina, a small sailboat charter and boat-slip rental operation 21 miles south of Key Largo. Once a dedicated 18-slip marina for sailboat charters, it has morphed over the years to include a few owner-sailed boats that rent slips, and several motor yachts. Sail straight out, and you're heading for Hen and Chickens reef and the rougher water of the Gulf Stream. Sail south a few miles, and you can take the Snake River cut into the bay. Since she was widowed seven years ago, Pam has run the place on her own. She provides local navigation knowledge and walks people through the details of a charter, like finding and replacing the diesel engine dipstick.