I can't wait to see one certain guy on Sunday that absolutely hates Sherels. He says he always fair catches everything, or at least way too many. I can't argue the point too much because at times during his returning career I've thought the same. However, I do think he's become more aggressive over the years, and much more so than early in his career.
I always look at punt returning as a "free" offensive play, so even a one yard return is better than zero. If the guy knows he can catch it cleanly and also knows he can avoid getting blasted then he shouldn't fair catch. Experience helps a lot in judging that when the ball is in the air. That's why I think Marcus improved his ratio and will be good to have back there again.