Sorry about your trip. Blisters are not fun.

I am not prone to blisters so this advice may not apply. Water does not cause blisters; friction does. Water may make your skin softer, but if the boot/shoes fits well then I can walk a week in wet shoes without getting blisters.

Wear a shoe/boot that dries quicker.

Change into dry socks everynight and sleep with dry feet. <img src="/forums/images/graemlins/smile.gif" alt="" /> I hate changing into wet socks in the morning. <img src="/forums/images/graemlins/frown.gif" alt="" />

Get an experienced pro to fit your boot/shoes.
_________________________
"In theory, theory and practice are the same. In practice, they are not."
Yogi Berra