"Before 2014 comes to a close, take a moment to meet some Rodney Dangerfields of the stock market—because it might boost your returns in 2015. You won't see these stock newsletter writers ranting on your favorite TV show. But they merit your attention more than the talking heads. That's because a select few of them have managed to produce market-beating returns over the long run. Take the Cabot Turnaround Letter, for example."