When skiing, I end up with a strong pain under the outer portion of the ball of my foot, centered around my 4th toes. Its in both feet but worse on my right.
I learned to ski as a kid and after a 15 year hiatus, started skiing again a few years ago. At this point, I'd call myself an (over?)-confident intermediate skier who can handle nearly all groomed trails. I started off in rental boots and remember one local mountain I would rent from caused a strong cramp until my foot fell asleep. Another didn't bother me as much. Last year, was my first time skiing more than 6 days a season and I decided my own set of boots was in order, especially considering the pain I was having in rentals.
On my initial fitting February, my boot fitter ended up going one size up in length due to how tall the mid-section of my foot is, sold me a Sidas low-arch footbed, and they did some heat molding on the outside of my foot around the base of my little toe. The new boots helped make the pain a little less intense but it was still a concern for me. I was very thankful that my shop offers unlimited custom fittings when you buy a boot from them (and will credit you for the boots if they ultimately put you in the wrong size boot). So, I went back to my local boot shop two more times and each time they simply expanded out the same area at the base of my little toe.
My 3rd visit to the shop, I worked with a veteran boot fitter (35 years) who finally recognized my strong pronation. He added a heel wedge and maxed out the cant angle adjustment on my boots. But by that point it was the end of the season and I couldn't test them out until this season.
This season, I am still having the same pain, but at least that section of my foot isn't falling asleep anymore. I do feel that with the heel wedges to correct the pronation, I am putting additional weight/pressure onto the outer ball of my foot. My bootfitter did play around with some met pads which felt fine in the shop. But after trying to ski, I couldn't rip them out fast enough. They also noticed that while I have a relatively low arch, it is very long. So we bumped up the size of the footbed from XL to XXL to extend the arch support.
I did also learn that at least part of the issue was my ski technique since I was relying on 15 year old muscle memory instead of lessons. I was muscling my turns and clenching my toes. I've taken a couple lessons now to start correcting that but still having similar pain in my foot. It's a slower onset, but I definitely notice it after a couple hours on the slopes.
My bootfitter is essentially out of ideas at this point, and I'm more or less at a point where I can tolerate the pain while I focused on continuing to improve my skiing. But I thought I would come here to see if there were any other thoughts that might help. Some days I contemplate switching to a board so I don't have to deal with my boots...