Well summarized good advice from RUSA #1609 from April-2011. I particularly like item #5.

https://groups.yahoo.com/neo/groups/.../messages/3563

5) Dry sock heaven. Drives me nuts to ride with wet feet after the rain has stopped. I carry an extra pair of socks inside two newspaper bags, then change socks and put the bags on the outside so the shoes don't get em wet.

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