I remember seeing the sign at the office too, but I seem to recall them being covered? or they may have covered, open and dry slips in those sizes. The marina seems a bit emptier than normal.
Edmonds is nice to sail out of, Kingston is a quick sail for lunch/dinner and back or spend the night in the marina or anchored! Free moorage for 2 hrs if dining etc there too.
She drives me boat,
I drives me dinghy!