I'll amend my statement about which is better. For instance, he following website says that it's better to align on the refracted pole at mid to high latitudes and better to align on the true pole at low latitudes:
http://canburytech.net/DriftAlign/DriftAlign_3.html
And wouldn't you know it, I myself am right on the borderline between the two where one can just about flip a coin as to which is better.
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