The department shall encourage owners of boats which are exempt from the certificate of number requirement under s. 30.51 (2)
(a) 1. or 2. to contribute funds to be utilized for the development or enhancement of programs or services which provide benefits relating directly to nonmotorized boating activities. The department shall make reasonable efforts to publicize the nonmotorized boat voluntary contribution program and the purposes for which these revenues are to be utilized.