Older Bic windsurf boards used 2 pins to hold the mast foot assembly to the board. After about 40 years the plastic pins became brittle and often snapped. Some people used cotter pins as replacements but I believe something a little fragile would be safer in the event of large forces. One of my photos shows the print next to the original.

These prints work great, I keep a few in my gear bag just in case.

I printed with Bambu Lab PETG Translucent