Hello,
Please understand everything I am about to write to you is only so you do not waste your time.
Even the best profiled kiteboardhydrofoils do not seem to work with the strut directly over the front wing.
Your board will not allow you to center over the front wing and it is to small.
The strut L E and T E need at least a little NACA profiling thrown at them and 20 cm is way to wide and flat.
The fuse having so much flat surface area will create so much drag.
All your mounting hardware will also not help in the hydrodynamic area.
I am sorry but in that configuration it will never fly, I am almost sure, by anyone.
Completely flat wings are so unstable.
It seems that things that are hydrodynamic are not flat, at least over large percentages of the structure.
Please do not even waste your time trying to learn with that, you will not.
Again sorry to be blunt but I have built 5 foils from scratch and test flown many others but that is by far the least hydrodynamic kiteboardhydrofoil I have ever seen. Tough love.
My first build in 2008 and yes it is an air chair copy, it flew but just!
19 layers 300 g f glass f wing almost flat bottom except for near L E. top Some NACA influence.
Rear wing 4mm alu again almost flat top, but semi naca by eye bottom.
Alu core wood filled strut 12 cm X 2.5 cm X 85cm
alu fuse with triangles for support at attach
The front wing has been reworked and used in a foil we use to teach even now!
I suggest that you try to get at least a little closer to what has been proven to fly.