It was in the news in a variety of ways 5 years ago that Mark Storey and/or others were asking for a designated clothing optional beach in Seattle.
At this time, we already have 3 unofficial clothing optional areas and we have two thong-tolerant parks!
Having only one or two as officially designated would mean that it could not grow to other areas . . . because people in some other areas would say, “To be clothing optional, you should or must go to blah-blah park!”