I just double checked the regs, because I know I was fishing legally this summer, to the best of my knowledge, I always check the regs.

it says Mar1-Nov 30: Fly-fishing only, catch and release except up to 2 hathcery steelhead.
Trout: min size 14" Daily limit 2
Other game fish: statewide min size/limit

I dont see anything about salmon. I did talk to a warden in June who said I couldnt target the school of Kings that was underneath the C-Post bridge, and I didnt.
Considering I only hooked about 5 pinks and landed (and released) 2 all summer up there, it should be a non-issue considering the poachers I ran into regularly up there taking chinooks, pinks and native steelies with treble hooks and big gaffs.