Re-read my earlier posts.
In summary from Opua (BOI) to Auckland
Opua (I do not recommend), Whangarei... both Town Basin & Madsen Pt (Comme ci, comme ša), Gulf Harbour (OK, but still too far from Auckland with lousy traffic congestion between GH & Auckland, does have a ferry
to Akld, but only 2x/day), Bayswater & West Harbour (no way Jose), Westhaven (would be my first choice), near Pier 21 (I wouldn't, too noisy & busy) Half Moon Bay (not too bad, but some distance out of Akld).
End of Story!