Do you think that water impact can cause these?
I've mainly used this board for wave riding.
Sometimes when I pearl, off a wave going quite fast, the board seems to hit the water quite hard.
I ride strapless, and when I crash, I normally end up nowhere near the board. If the board hits me it's normally from behind. All these "ding marks" are on the back and sides. And if it's from my mishandling the board, hitting it with the spreader bar etc, I'd think I'd think I'd have some recollection about it at least once.
Thanks for comments anyway