25 years ago I raced against a fellow who had just bought a 29. He dimpled the hull the first season by over tensioning the
rig. That winter he set the boat up with an auto jack crankedup athwartships inside, removed the dimples, I don't know what else he did internally, or if the removal was permanent as he sold the boat that Spring.
My opinion would be to move on, and even more, would be to consider the C&C 30 mark I. The 30 sells for about the same cost as a 29 but is a far better boat, considering room, construction, performance and most anything else, based on my experience as a former owner of same. I doubt you'll ever see a 30 with a dimpled hull.
Good luck.
PS - PM me the sail numbner of the 29 and I'll tell you if its the same boat...