I wear Body Glide on my feet, which repels water, and just hike thru the streams, or hike in the down pouring rain with my trail runners and Smartwool Adrenaline socks. Happened this weekennd and not one blister, or hotspot, or foot sliding around. Hiked 6 miles in heavy rain the entire time. smile I swear by Body Glide. Haven't tried Hydropel, but I'm sure it's just as good.