Why was vote on Cayo Costa plan pulled? State is mum; advocates fear for island's environment A Cayo Costa Island homeowner weighs in on tourism impact on parts of the island Replay Video UP NEXT With no explanation, the Florida Department of Environmental has pulled Cayo Costa State Park’s management plan from a June meeting at which it was to have been voted upon. The plan has drawn heat from park supporters opposed to continued commercial use of a dock at the island’s southern end. They say twice-daily dockings by large excursion boats damage sea grass, while the raked, root-pruned path used by their thousands of monthly passengers creates a channel through which water could rush in a storm, slicing the 9-mile-long barrier island in two.