Well, that does not sound like it was a good situation. Also, welcome to the forum!
You can purchase new center boards from Cape Cod Shipbuilding or D&R Marine which you can find links on this package
http://forum.daysailer.org/links.php . Also, there is an article From the DaySailer Quarterly for building a centerboard here
http://forum.daysailer.org/pdf/qtr_buildcb.pdf .
The newest design centerboard which has the best foil shape and the best performance is the one from Cape Cod Shipbuilding. The Association commissioned the design, tooling, and then contracted Cape Cod Shipbuilding to make these. I'm not sure how to get in touch with the guy that makes Water Rat foils, but I believe his are among the best, also.