Throughout my adult life skiing has been my main sport. When I started in 1965 at the age of 21 boots were leather lace-ups (and bindings were cables and skis were wooden). These boots had very little lateral rigidity so canting didn't really have a meaning.
As boots became more rigid sideways I found myself at a significant disadvantage because the skis were always on the outside edge. I measured many good skiers and came very quickly to the conclusions contained in my booklet "Canting of Skis".
I have always corrected my own ski boots according to these principles. I have subsequently qualified as a ski instructor with the British Association of Ski Instructors "BASI" and led ski parties for the Ski Club of Great Britain most years since 1980. In these activities I have measured hundreds of people and corrected many.
These measurements have confirmed the principles that I defined 30 years ago and the estimate that I made many years ago that about 30% of people need to correct the canting angle of their ski boots.
"I continue to be amazed at the resistance to canting that persists throughout the ski world. It is so basic to efficient and pleasurable skiing" I could have written that but in fact it is a quote from Warren Witherell, the American team coach of the early eighties and author of ‘How the racers Ski’ and ‘The Athletic Skier’. The situation has improved very little since.
The KPS cant gauge. For now further info is on
Booklet "Canting of Skis" my old website
Ski Technique www.backseat.co.uk
Anterior Cruciate Ligament Injuries