Since my ddk days, i have been manually making flashcards of my missed opportunities.
katrain shows me what i missed and i manually make screenshots of the position with and without analysis markers.
i finally automated the process and the result is flash goban.
This video should give you a good idea of how it works
install your copy of this alpha release software today;
https://github.com/metaperl/flash-goban/blob/main/README.md
related tools
OGS Buddy – a tool to assist in making flashcards of OGS positions.
Anki-go – allows you to load SGF into Anki and play out sequences…