He was one of those seminal coaches who completely changed the sport, and is almost unknown today to modern skaters. But he still has good advice.
I happened to pick up his book Championship Figure Skating (C) 1951. Much of it has to do with compulsory figures, but at the beginning there's this section:
I was having my old MK Pros transferred to my new boots, so I told my tech to move the blade 'in' just a smidgen.[Imagine a pair of skates] on which the blades are set to the inside of the centerline of the boot from toe toe heel. Setting the blades in this way brings the entire foot under the body while standing on the skates, thereby strengthening and straightening the ankles....This method is logical and will not fail...Set in blades cause no harm to the foot; actually the skater will perform better with them than without because the additional support they provide will give him more self confidence. [He used this with all his students.]
A couple of days later I was lap skating in my boots; My new blocks of concrete boots. Don't they all feel like that the first half hour? Then I started doing 3 turns, spins, mohawks.
I have to say, I felt much more stable on the turns, and I swear stroking was easier and with more power. It was amazing.
So, for me that little experiment, and the $10 for the book was worth it!