Final answer:
A captain needs to be at least 16 years old and possess a valid boating license or certificate to tow someone.
Step-by-step explanation:
In order to tow someone, a captain needs to be at least 16 years old and possess a valid boating license or certificate. Additionally, they should have knowledge and experience in boating safety, including understanding the rules and regulations regarding towing. This ensures they have the necessary skills to safely tow someone and handle any potential risks or emergencies that may arise.