Hi 737OPR
As I understand your post, your company SOPīs says you shall fly the non precision approaches as CANPA. That rules out flying as 411A suggests.
Are you sure that your Approach charts are not published with a factor of f. ex 50 ft added to the original MDA thereby giving you a "new" MDA you can actually use as a "DH".
Our charts from EAG have a factor included in the MDA for non precision approaches.
Regards
DER