Assuming that the hull is still.....
somewhat structurally sound, my guess is that your looking at a $30-50K to get to get it decent looking again. You're going to speed around $10K alone just to clean, recore, re gelcoat, and repaint the boat.
Bottom line: I'd pass
If you liked my advice/response, give me some rep points. If you didn't......well what do you expect, it was free.