I want to buy a used sailboat, but she's been in the water(freshwater) for 10 yrs. I don't think she's been out of the water during that time. I will double check with the owner to see if she's been taken out for maintenance, etc. What are possible problems that I should be concerned about? (The boat is fiberglass). If there is already a thread on this topic I apologize but I couldn't find one. How long can/should a fiberglass sailboat be in the water?