Stand up paddleboard or surfboard side find other a thruster setup. It's a flat foil design, height and base are approximately 130mm. The files are for the fin on the right, you'll need to mirror it to print the other side. There are two versions for different styles of fin boxes (both are 6.3mm thick). I've only used them once so I'm not sure how durable they are, I'll probably reprint it in a stronger plastic but I'm curious how long they'll last in PLA.
Filaments: (full list can be found on thrinter)
-- Atomic Filament Clearance Transparent Blue PLA
*Exclusive sponsored gift by @Wesup included with this design.