I just bought an '86 28.5 and now noticed stress cracks and spider cracks on the hull. I did not pay much for the boat, about $5K, but was wondering whether or not to address these cracks in the gel coat before I put the boat in the water. I had the boat surveyed and the surveyor told me that they are just cosmetic and not to worry about them. Does anyone have any advice? Also, are these stress cracks in the hull common? Thank you!