I recently purchased a 2001 Islandia with the Mercury 240 Jet Drive. I am very pleased with the boat, but not with the engine. I do a good bit of Intercoastal waterway boating and this boat isn't practical at all due to the terrible fuel mileage. Anybody out there know what kind of fuel economy this boat should be getting? Also i've found a 2007 Islandia with dual engines and I am strongly considering trading up if the fuel range is much different.