Sled,
There are still a lot of coho out in the sound and plenty on the way with chums right behind them. Don't give up hope yet. It should remain good through September and usually well into October, although your concern is valid. With all the rain and cool weather these fish won't hold in the salt as long as they usually do in September and Oct.

Kinda funny because the kings seemed to be a bit late this year but the coho are sprinting like mad.