Post like this make me realize how lucky I am. I have only had a couple of blisters in 40+ years of hiking.

Friction and not wet feet cause blisters. Yes, wet feet are softer and moisture increases the friction, BUT your shoes do not fit correctly if you get blisters. <img src="/forums/images/graemlins/blush.gif" alt="" />

It is likely that you have an undiagnosed shoe fit problem if you get blisters when your feet are wet.

You have gotten a lot of good advice.