I'm Loïc from France and I didn't find any Wakeboard Forum so I've decided to post my build here, hope you don't mind.
So I started to build a Wakeboard few weeks ago and I'm delighted to share my progress with you

I wanted to build my first 141 cm Wakeboard from XPS and Fiberglass.
For the rocker table I used the rocker from a Slingshot Wakeboard I've found on internet :


Then I build the rocker table from MDF :

The shape is from the Slingshot Wakeboard as well :

For the core, I wanted to use 2 cm sheet of XPS foam.
After the cutting, it started to look like that :

For the channels, I wanted it to be simple to build, so I made them like that :

I then glue the inserts with Epoxy and made the rails from Epoxy and Micro-balloons :




After a lot of sanding, it really starts to look like a Wakeboard



For the fins, I found some nice one on Thingiverse and printed them with PLA :


I'm quite happy with the progress so far and will continue soon with the next steps.
So now I will start to fiberglass the whole board with a vacuum pump on the rocker table.
I have some question about this part and I hope you'll be able to help me with it

For the stratification, I'll use a 200g/m2 taffetas fiberglass with epoxy but I wonder about the number of layers.
I wanted to use 6 layers for the top and 4 layers at the bottom, what do you thing about it ?
Many thanks in advance for your advices.
Cheers.
Loïc