I started hiking this way about 10 years ago, and can't remember the last time I got a blister. I figured this out by reading Ray Jardine's books, "The Complete Walker", and "Fixing Your Feet", plus lots of trial and error.
Conditions: Non-snow seasons, from mid-30° F to high-90° F, up to 22 miles per day.
Footwear: ASICS GT-2150 Trail, REI CoolMax EcoMade Low Socks, no gaiters.
Before bed: Wear dedicated "sleeping socks" at night, same kind as hiking socks.
Morning: Nothing special.
Before a trip:
Kill athlete's foot with Vicks VapoRub. The fungus causes feet to peel and blister more easily. I apply a thin layer of VapoRub daily, to all of the infected areas. In a few weeks, the fungus is gone, and my feet smell better.
During a trip:
Take 10 minute breaks every hour.
At every break, take off shoes and socks, and let feet air as long as possible.
During breaks, keep feet up, preferably higher than your butt.
Carry two pairs of socks, and put on the drier pair of socks at each break. The other pair goes in an outside mesh pocket to dry.
Tie shoes loosely, so I can slip them on and off, and dump dirt and rocks easily. Gaiters make my feet too hot.
Replace socks at each food drop.
I will try these on future trips:
Wash one pair of socks every day.
Wash feet every day.