I have left it on add point as it doesn't seem to do any harm with nearest point alignment. After doing taking down the mount for maintenance or similar I clear the alignment data, make a loose model by syncing in a few places (around 10 or so) around the sky and save that as a base alignment data which then gets loaded for every subsequent session. That way the first slew is usually already fairly close and plate solving does the rest. This is also useful during the light summer nights here in Finland or day time imaging of planets when plate solving can't be used.

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