(a) Except as otherwise provided, in Districts 10, 17, 18, and 19, drift and set trammel nets may be used if the meshes are at least 812 inches in length, except that these nets may not be used in District 18 within 750 feet of any pier or jetty, nor may they be used for the taking of salmon.
(b) This section shall become operative on August 15, 1989.