I had several cracks appear in my gel coat over the winter time, I got a surveyor in and he said the damage was caused by water getting in between the fibreglass and gel coat and freezing. He also stated the water is no longer there. He could not explain how the water got in there or why there is no trace of the water afterwards. Sounds fishy to me. Any comments or suggestions on where I can find reputable help in the Toronto area would be appreaciated.