1996 Grady White Marlin 30' that has a crack in the fiberglass on floor in Head. Please see Pic that I hopefully attached and if anyone has info on how cracked may have happened? Stress related? anyone had a grady white with similiar crack? I am looking at boat to buy and I am concerned that there could be hull damage if floor flexed enough to crack was boat abused? Grady's I always thought were extremely tough but this may not be a big deal. Could it be from bashing through head seas? boat has twin 250 Yamaha's.