Basically if the Seahawks are playing in Seattle at any point during a given Sunday and you want to go to Seattle (via the north end ferry dock) on that day- schedule for at least a 2 hour wait (to be safe). It is not because the lines in Vashon are necessarily long. It seems to me that the difference is that the traffic from Southworth is so much more substantial. Thus, the ferry takes on fewer cars.
As if I didn't struggle enough with football.