Fantastic eFoils and Where to Find Them

[NotSure]

Something like 80% of the world's population live within 10 miles of a coast line...

This guy rides onewheels too.

These appear to be the most established brands on the market today:

https://fliteboard.com/

https://liftfoils.com/

https://awakeboards.us/products/awake-vinga-3

https://us.waydootech.com/pages/efoil

https://sifly.global/shop