FCS Surf board Twin fins

Large fins for paddleboard, long board, windsurfer or twin,
based on wave windsurf fin designs.

Rear are 150mm x 7mm x 113mm
Front are 125mm x 7mm x 92mm

Have made partially hollow to fill with epoxy resin or similar for strength.
Fin face is flat on inside.
Feel free to edit.
possible improvements:
I haven't worked out how to remove material to make honeycomb,(less plastic,more resin.)
If you want to glass over the tabs, you will have to scale the vertical axis to allow for the ext