Today I looked at a 1988 C22 WK for possible purchase. About 1/3 of the way down the starboard side of the wing keel, there was a small crack about 3 or 4 inches long, beginning at the front of the keel moving toward the back. What is the danger involved in this damage to the keel? Should it be repaired? If so, any thoughts on how to approach repariing it. Is this a huge danger sign about this boat? or "no big deal"? Thanks