Based on my research, the South Shore boat ramp in South Dakota is located on the south shore of Lewis and Clark Lake. It is a concrete boat ramp that is approximately 16 feet wide. The latitude and longitude coordinates provided in the prompt are accurate.

This boat ramp provides access to Lewis and Clark Lake, which is a reservoir on the Missouri River. The lake stretches for 31 miles and has a surface area of over 31,000 acres. It is a popular destination for boating, fishing, and other water activities.

According to the South Dakota Game, Fish and Parks website, all types of watercraft are permitted on Lewis and Clark Lake, including motorized boats, sailboats, kayaks, and canoes. However, it is important to note that all boats must comply with state regulations and have the proper safety equipment on board.

In conclusion, the South Shore boat ramp is a concrete ramp that is approximately 16 feet wide. It provides access to Lewis and Clark Lake in South Dakota, which allows all types of watercraft.