According to this NYT Review of Jan Crawford Greenberg’s new book, Supreme Conflict (a book I have not yet read but hope to read soon), “As for former Justice O’Connor, she is quoted as saying of Bush v. Gore: ‘I don’t think what emerged in the last opinion was the court’s best effort. It was operating under a very short time frame, to say the least. Given more time, I think we probably would’ve done better.'” The review quotes the book on other Justices’ views of the case as well.