Did a bit of ice fishing in EWA my MUCH younger years. Not all that entertaining, often downright unpleasant and potentially quite dangerous. In several cases we witnessed the collapse of ice around a hole because too many people were clustered around it and the ice was too thin. You really need some serious and sustained cold temperatures (which don't seem to occur with much regularity in the PNW). A lot of the people I icefished with were raised in places like Wisconsin and Michigan where the winters were very cold, the ice thick, and popular ice fishing lakes were populated with ice shanties for several winter months.
I can tell you it's a serious pucker factor when you hear and feel the ice popping, see the cracks spread, and water starts welling up out of the hole.
If you're really intent on ice fishing I'd advise finding some gear fisherfolk who know what they doing in our generally marginal conditions.