You guys build your board like a skateboard

not as good as a snowboard build

i made my board with half an inch strip of wood glued side by side,
u can choose different kinds of wood for a flex, lightness and stifness.
u dont need much fiberglass for this kind of set up either

plus its way nicer look if u keep the glass clear
it wont look like a piece of plywood u stole in your dads garage

Swim82: Ply & veneer is used to keep it simple and quick. Vertical lamination looks like wayyyy too much effort, especially the rocker line. I'd try a carbon board first...