4 of us hiked down a couple of years ago. took the oars and strapped the deflated rubber and frame to them and walk down king tut style. It was actually pretty easy if you are somewhat in good physical shape. the other two carried a smaller cooler, beers, pdfs and a dry bag. It might have took a couple of us two trips to get everthing down. We did this on a thursday morning, fished duirng the day and hung around the put-in till midnight to get first take on camp sites. Hiked back up to the campground. Honestly, I couldn't justify paying $360 for a little hard work. Plus the beers seemed to go down a little better afterwards.
I'm planning to do this early-mid June, tyring to hit the salmon fly hatch.