Nick’s Swift Copy was a 1984 release. It was Much more than just the Best Copy Program and Copied “almost all’ protected disk (what does that mean?). Could handle disk errors, had a quick format. A disk analyzer to detect errors, 1/2 tracks, extra sectors, non standard SYNC, etc).
Nick’s Swift Copy is referenced very frequently in the CLONE NEWSLETTERS also found on the blog here. Click Clone Newsletters on the right side bar.

It took YEARS, but the program was found: Nicks Swift Copy 2.0
PLUS the Manual is here: Nick’s_Swift_Copy_Manual