Looks really amazing! Great job on the fin.
I still have the same critisim on this fin.
It’s too thick in the back part. Take a look at the image below to get an idea how the contour lines should look to be more hydrodynamic (they should be further apart at the trailing edge side).
Please read this as constructive critisism, I really enjoy the build pics!
I will pay more attention to fin foiling next time, thanks for that Hans. As probably all of your first builds, this is all nothing but a process of trial and error. Nevertheless I really enjoy!