I got a used tail tank shell that had a few dents in it. Also, near one of the mounting points it had been punctured pretty good. I am going to run a bladder so I am not worried about fuel leaking out. How do I repair the tank. I know it is easier to just to buy a new tank shell but I got a good deal on this one.

I am looking for more cosmetic than anything. On the dents buddy of mine said we could just use some bondo to fix those.