Using finfoil.io to create the wing:
https://app.finfoil.io/3D/ue4iaboz
Used Openscad to close the dihedral gap at the bottom of the wing by selecting a left and right portion of the wing missing the middle 4mm and then closing them together.
Selected a profile shape I created compatible with aliexpress 3-hole mast, Gong 3-hole mast and F-One mast with some room added for composite fabrics and resin.
Did some vertical and sideways scaling of the profile to create a reinforcing box to pack the composites around, positioned the modified wing, added the box and removed the mast profile.
I will probably 3D print the wing in several parts out of PLA which requires additional work to subtract bamboo skewer dowel cavities at the junctions and then to split and reassemble the parts sticking up from the zero height vertical plane.
As with most wings this is a compromise. MH23 NACA profile extends through the whole span proportional to the chord, that's why it's 50mm thick at the middle, I want it pumpable at lower frequency.
The sweep back gives good seaweed clearance(think Storms) and has an additional function of pitch-stabilising the wing. The transition from long chord to hold the mast foot and short chord further out is gradual to not loose too much lift from the centre section up in the inside corners.