Why did I not think of this BEFORE hiking Crow Pass?
Had a perfectly good solution to the problem of crossing an ice-cold glacier river, sitting right in the attic with the boating gear which we hadn't used in years: neoprene socks!
It was a middle-of-the-night revelation, and I promptly went searching for them (the next morning). I lent the socks to friends who were about to go on the Crow Pass hike for the second time this summer, and we had just compared stories of painful feet!
Here's the glowing report:
"The Socks made all the difference in the world -- my feet never felt uncomfortable, so less painful. Amazing technology!"