SHEBOYGAN, Wis. (WHBL) - A Cascade man will spend a year and a half in prison for his 6^th drunk driving conviction.  46 year old Joseph Hill was sentenced recently in Sheboygan County Court.  Hill was stopped and ticketed last June while driving in the town of Lyndon.  Hill will spend a year and a half in prison to be followed by 2 years on extended supervision.