I apologize, but there seems to be an error in the question. The East Pearl River Boat Launch is not located in Wisconsin, but rather in Mississippi. Its coordinates indicate that it is situated in the city of Pearlington, which is in Hancock County, Mississippi.

As for the boat ramp itself, it is a public facility managed by the Mississippi Department of Wildlife, Fisheries, and Parks. It provides access to the East Pearl River, which is a major waterway that flows into the Gulf of Mexico. The boat ramp is reportedly wide enough to accommodate multiple vehicles and boats at once, although I could not find specific measurements.

In terms of watercraft, the East Pearl River is primarily used for fishing and recreational boating. It is known to be a popular spot for anglers looking to catch species such as catfish, bass, and redfish. Various types of boats are permitted on the river, including motorized vessels, canoes, and kayaks. However, certain regulations regarding boat size, horsepower, and speed may apply depending on the section of the river being used. It is recommended that boaters check with local authorities and follow all posted guidelines and safety precautions.

Overall, the East Pearl River Boat Launch appears to be a well-maintained and convenient facility for those looking to access the East Pearl River for fishing or boating activities.