Mike Rapoport wrote:

If you have full scale deflection, you may not even be on the approach
anymore, but I am unaware of any regulatory requirment to initiate the
missed. If you see full deflection you should probably train some because
you are not competent.

Sure, you are no longer flying the courses and/or altitudes specified on the
approach chart, which come from the Form 8260-3/5 that is an amendment to FAR
97.