I was planning to write this article for at least 5 years and tried multiple times, but the information was too fragmented.
Now I used multiple AI platforms for a deep research and combined it with my own knowledge in the following article:
There are still a lot of grey and unknowns, so I hope the eFoil community can help to fill the gaps and to identify wrong information, if this is the case.
It is so far only for Europe, but I am happy to expand it to other regions, if someone has the proper information.