The task isn’t to bring the subconscious to heel,
Right.
but to establish filters through which to screen the output of our minds,
No. More is possible:
it’s consciously understanding and applying techniques to make your mind as a whole work better that’s the heart of rationality.
Is the rational person subject to “March winds”?
Right.
No. More is possible:
Is the rational person subject to “March winds”?