Thanks for the great sharings, and awesome builds Slyde and stenninger It's going to take a little time to digest this!

I have very limited board building skills in comparison and also very limited tools and facilities at my disposal, especially during the lockdown.
I'm planning on building hollow with wood (paulownia) with some carbon reinforcements here and there.
This will somewhat limit the sort of shapes that I can build (it's not like I'm a master woodworker either). I believe that you don't need a complex shape for a wingfoil board - it's going to come out pretty boxy and I reckon that's going to be OK.

There are 2 things:
1. one needs a lot of time
2. it is not cheep at all

Totally true! You don't get to save that much money doing this, but you have the priceless satisfaction of riding your own creation.