Bought a 5' 8" FST Sub scorcher recently. After 3 surfs at pretty mellow beach break, the side fin box has been ripped out through a standard turn (no damage to the board AT ALL before!) I noticed the tail slide out whilst mid turn and when I inspected the damage, the fin system had been torn out and de-laminated of the bottom of the board.
I noticed that at the bottom of the fin box was a piece of plywood. This must have been added during the manufacturing process as a fault, or in attempt to raise the fin box up after the hole for the box being drilled too deep. The resin has not taken to the wood and caused a serious weakening to the box.
I have contacted (tried) Firewire customer services twice regarding this matter for an explanation as to the reason for the wood being there and have had no reply. I am very disappointed with a) the quality of maufacture of the board and b) the disregard from Firewire regarding the issue.
I will post photos of the wood ASAP.