Hello micheblue and welcome. Craigslist often includes offers to remove old boats under the heading of "boats" or "boat parts". You might try contacting one of those advertisers with a description of what you need and perhaps a picture of the board you have removed. With that idea in mind you should remove the damaged centerboard (if you have not already done that) because perhaps a repair is possible. Check the O'Day owners comments on this site for other suggestions on the subject. Best Wishes.