As far as I know Josef Jelinek is the only one using the "Marc Waterman" method. But back in 1982 many WC competitor were using similar methods, including former world champion Minh Tai. He also wrote a book about his system, but I think it was only for beginners. For the 4x4x4 cube I stil use a 80's method which is Waterman-like. But I'm not very fast at it. Back in 1983 Waterman solved the 4x4x4 in less than 1.20 average