by Lebowski » Wed May 29, 2024 2:57 pm
It's a crease. As far as creases go it looks like a relatively minor one, in that it stops at the stringer. It will weaken the board, but if the glassfibre isn't cracked or split, it might be ok. It's fairly near to the nose which is better than if it was straight through the middle. You should carefully check that it doesn't go around the rail and that there aren't any splits in the glass on the other side of the board opposite the crease.
You could try and contact Lost but it will have been caused by an impact of some type, backed up by the huge pressure dent in the same place.
The best thing to do would be to fix it properly by locally sanding the area and laying new glass there to restore the strength. You could also gamble by leaving it if it's water tight, but it might get worse with time.