The East Niceville Rocky Bayou Boat Ramp is a public boat ramp located on Rocky Bayou in Niceville, Florida. It is a concrete ramp that is 20 feet wide and has two lanes for launching boats. The latitude and longitude coordinates of the ramp are 30.51003647 and -86.45536041, respectively.

The boat ramp provides access to Rocky Bayou, which is a body of water in Okaloosa County that is connected to Choctawhatchee Bay. Rocky Bayou is a popular destination for fishing, boating, and other recreational activities.

As for the types of watercraft permitted on the water, the Florida Fish and Wildlife Conservation Commission states that "all motorized vessels must be registered and titled with the Florida Department of Highway Safety and Motor Vehicles (FLHSMV), except for vessels used exclusively on private ponds or lakes." Therefore, any registered motorized vessel is allowed on Rocky Bayou, including boats, jet skis, and other personal watercraft.

In summary, the East Niceville Rocky Bayou Boat Ramp is a concrete ramp that is 20 feet wide, located in Niceville, Florida, and provides access to Rocky Bayou. Any registered motorized vessel is allowed on the water.