And how exactly does one get such a ding in that particular location at that particular angle? Please share.
Damn good question. I wish I had a good story to tell you but I honestly don't remember the incident happening... There was one duck dive where I didn't quite get deep enough. My friend was trailing directly behind me (not sure why) and we collided. Didn't think anything of it at the time, but that could've been it.
I had the same issue with my fin box. Except some idiot stepped on my board in the shallows and broke my fin and pushed up the glass on the box. Easiest way to fix that is if you have a dremel tool carve out the cracked fiber glass and make a clean void but don't dig into the box. Just get a ding repair mix up some resin and fiber so you can fill in the void. Than just just use a small strip of fiber to patch over the filler, sand and finish. Dremels are great b/c you can carve whatever you want out easily. If not use a utility knife.