To rent a boat do you have to have a boating license?

I dont think so as long as the motor is 9.9 or lower.

To operate a rented powerboat or personal watercraft legally, a person must: Possess a valid Oregon Boater Education Card and carry it on board or … Complete a Watercraft Rental Safety Checklist and carry proof of completion on board. To rent a personal watercraft legally, a person must be at least 18 years of age.  Boat Ed › abc › pdfs › or_law Oregon:The Legal Requirements of Boating - Boat Ed