"Kind of hard to have a creel census program, get good data and make in season management adjustments for saltwater when all coho fishing in the sound is closed."

Absolutely correct. In this case, WDFW would have zero information on which make in-season adjustments, and no possible way to obtain any information. All they have is anecdotal reports of good fishing.

So under these circumstances, there is no way to open a fishery if the pre-season forecast is for a poor adult return, but the number of adults may be quite high. It reiterates the importance of a good pre-season forecast.

But that's sorta obvious......