Hey TM,
Great question and one that bears an explanation.
While your pots are in the water, by definition you are not actively fishing.
WDFW defines fishing a crab pot as actually pulling it.
So, when WDFW regulations state that you cannot "fish" a crab pot from dusk until dawn, the intent of the rule is to keep people from pulling pots in the dark.
You can indeed soak a pot overnight and pull it in daylight hours.
To directly address your question. as long as the crab you have on board are legaly recorded on your catch record card, you may indeed splash your gear with the intent of pulling it the next day.
I will ask WDFW Deputy Chief of Enforcement Mike Cenci to weigh in on this issue or to review my interpretation.
FYI: here is a link to the podcast to Mike's interview from Saturday:
http://www.theoutdoorline.com/Podcasts/8.aspx