My Mom has had an inground pool with fiberglass walls that I'm thinking of replacing, because, of what I beleive are plumbing leaks. The walls have lasted 48 years, however, have a couple of bad bulges. The Pool is kidney shaped and is about 23' wide X 33' long with concrete bottom. There are only two sheets for the sides . Newbie did you find any that big?? And can I really do this repair myself?? other than being handy, I have worked concrete. Any Answers??