Mudlsinger -
Have you trie to contact WDFW at the Mill Creek office. It is a WDFW launch and the enforcement officers may be willing to do something. The phone # at the office is (425) 775-1311. Asked for either the local sergeant or the regional captain. If they can't help with this one (a call earlier may have helped) they should be able to tell you the best way to deal with that situation in the future.

Good luck and thanks for caring!

Thight lines
Smalma