John,
I just saw your post... I am headed to the Ski to Sea race also and I want to get on class IV section also. Thesection above Doug Fir Campground is really Sweet. Would love to get back on this as it't not easy to get too anymore for me. Used to run this after work a few years ago.
I will be driving right by it on Sunday for the Ski to SEA race.... Maybe we can get a lap in Sunday during the other events? I'm doing the sea kayak event so I would be down for a lap as its only 2.5 miles long.
Let me know if you can meet up this weekend... and I will bring my creek boat.
503-891-49oo