I. (a) The department shall charge a fee of $10 for issuing a safe boater education certificate. (b) The fee for a temporary certificate shall be $10. II. (a) The department may charge a fee for offering a safe boater education course or exam. The fee shall not exceed the costs incurred by the department in offering the course or exam. (b) Agents of the department may charge a fee for offering a safe boater education course or exam. The commissioner shall establish by rule the maximum fees that may be charged by agents. III. The total of all fees that a person may be required to pay under this section shall not exceed $50. IV. Fees collected by the department under this section shall be paid into the navigation safety fund established under RSA 270-E:6-a.