Roxboro - Robert Franklin Gentry drove a ski boat into the back of a pontoon boat, killing Tammy Duke. The ski boat went through the pontoon and struck Duke and knocked her into the water. Gentry left the scene and turned himself in to authorities about four hours later, according to the Wildlife Resources Commission. He submitted to an alcohol test. He was charged with boating while impaired, careless and reckless boat operation resulting in the death of a person and failure to render assistance and submit identification at a boat accident.