Since my son is also participating in this early efoil adventure, I am going to put that picture. Fake or not, it won’t hurt anyway.
We have a double danger here : 3000 rpm props of course, but also the foil… For ourself BUT also for swimmers swimming away from the safety area.
https://www.surfer.com/blogs/random-happenings/open-letter-from-jamie-mitchell-on-hydrofoils/