The problem
The dead zone.
When the pivot sits on the floor, the board has to translate sideways before it can tilt. During that translation your foot is being carried somewhere without being asked to do anything about it.
By the time the surface starts to tilt, your center of mass has already left the base of support. The correction that follows has to come from the hip and the trunk, because the ankle no longer has the leverage to do the job.
The result is that the user gets very good at the compensation and no better at the skill.
Translation before rotation
The board moves laterally first, which is the opposite of how the ankle works.
Late signal
Proprioceptive feedback arrives after the correction window has already closed.
Hip-dominant correction
The strategy trained is the one people already over-rely on.

