Does anyone here try use elements of Technical analysis ( such as cycle driven positions), Modern Portfolio Theory (such as weighting the betas) and Fundamental analysis?

I am really curious about your impressions on the topic. People who are on stock market and discuss the reasoning behind their buys and sells usually affirm one school as a matter of dogma. I have met some technical traders who see little value on fundamental analysis, heard some fundamental investors saying technical analysis is like astrology and finance professors saying both are in effect going extinct, as markets become more efficient