The Dolmus runs from the bus station in Fethiye, by the garage behind Erin spot shop, it usually does a little detour past the mosque and then heads out of Fethiye and down the Gunlukbasi road.
Teresa, done that boat trip, it takes ages, you only get about half an hour in Gocek market then the boat heads off to Gocek island where it pulls up to let you swim. It's a nice trip but you really don't get to see much of Gocek.
Rimms