Crack in finbox of F160
I ran my fin into the bottom and made a 30 mm long crack in the back of its Deep Tuttle box. The crack starts about 10 mm down in the box. I'd like to know whether there is foam behind the box or if there is so much fibre there that I can trust the board to hold up even with a crack. Could someone tell about what the construction of the fin box of a Formula 160 is like?