I put the majority of it on the balls of my feet and heels,(the areas I tend to get hot spots on) then up and around my toes. I applied a small amount to the tops of my feet. I highly recommend it. I was also able to put dry socks on each morning. When my shoes were really wet I found that keeping them on longer in camp actually helped dry the socks .
Thanks, this is pretty much the same advice I have been given before. I bought a couple tubes of Hydropel and tried it with my hiking boots but I couldn't really tell if it was helping or not. Now I have switched to breathable trail runners so I'm thinking of using it again.