Glad to hear you have a solution you are working on. If the worst happens and you start to develop a blister, I recommend using donut-shaped, spongy corn pads from Dr. Scholls. Place the blister in the donut-hole. Might take 2 pads to raise the sock off the skin. Use an alcohol wipe to clean your skin prior to application to aid in sticking. Then tape (duct or lucko) over the pad and plenty of overage to aid in sticking.
This combo, along with good lacing technique to lock in the heel, has worked for several people I've applied it to while hiking or hunting with them. (I don't have the blister issue, personally.)
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