Keta - As knowledgeable as you have proven yourself to be, I'm surprised that the rule about targeting them didn't just jump out at you.

On page 20 of the "Fishing in Washington" rules pamphlet under Seasons in the center column at the top, the last paragraph states:

"ALL FRESHWATER AREAS are CLOSED to fishing for SALMON, Dolly Varden/Bull Trout and Grass Carp Unless listed as open in the Special Rules.

That seems pretty clear!

As to determining what gear might be salmon specific, the subjective opinion of the enforcement officer and that of the judge or jury would be the decisive factors unless the anglers own admission of guilt prevailed.

My experience has been that you can catch trout on a bait wrapped kwikfish and salmon with worms leaving me wondering if the idea of species specific gear is anything more than a fantasy.