I got tired of sore feet from $15 big 5 boots so I got some nice redwing boots, pain in the ass(foot) to break in but well worth it, I can work 12 hours of preload+helper and not be sore, well my feet won’t be sore anyways. I also use 2 pairs of socks, an inner thin layer that sticks to my feet and an outer thick wool layer that provides cushion. This way the 2 socks rub in the boot rather than my foot rubbing the sock creating blisters. If I do work 2 shifts I change to dry ones between. Lastly make sure you have good insoles, I got some gel ones that work great.