Creaking deck fiberglass on my 1985 Hunter 34. There is no noticeable bouncing and since we have owned the boat the past year we have noticed no leakage anywhere, hatches or ports. It does appear that the prior owner eventually well-sealed all areas. From midship forward, however, the fiberglass creaks and pops as one walks along the sides. The sound is similar to walking on egg shells. Any suggestions to prevent any further deterioration?