To drive your own ski (single) you must be at least 18 years old. 18 - 24 year olds can drive a ski on their own but must take a boater safety test (this requires that you arrive 1 hour prior to departure to take the safety test) unless you already have a valid boaters license (must be shown at check-in). 14 - 17 year olds can drive the ski if accompanied by a qualified driver. 25 years older and above do not require a boaters' license or safety test. You must bring a valid photo ID and credit/debit card with you to check-in.