How easy [or difficult] is it to backslide/royale/farf/torque in a Mook frame? What about a 72mm Bake? A classic Lightning TRS without a groove?
Enter Backslide Height
It seems like it'd make sense to measure the actual angle of tweak required to make frame-boot contact, but soul plates are, fortunately, many different widths.
What's that? Create an average of all soul plate widths on the market to make backslide angle a generalize-able measurement? Welp, soul plates have been widening (and are currently narrowing?) throughout hardware history, which would create a semi-meaningless relativistic measurement requiring maintenance ...