I bought a board off ebay and it came in with a damaged molded fin, a pretty bad crack at the tail edge, and a pretty bad chip on one side. I am pretty sure that the visible damage can be repaired but is it possible that if the previous owner has been riding it, it has damaged the core? For reference it is a 2007 Marius which the seller stated to have only been ridden 15ish times. Not that I believe a word he says since it was listed in "excellent" condition.