Coyne,
I have also done the SFO-YVR route (my husband did a triathlon in Sonoma Valley). We took the I5 all the way though because we had to get back in a day. My thoughts are if you are going all the way to SEA why not make the extra 3 hr trip to YVR? Your US dollar goes a looong way here, and there are tons of golf courses. [img]/infopop/emoticons/icon_biggrin.gif[/img]