Quote from RCG Trader:
Look, for all you Gann aspirants out there. Gann traded like every other trader. He looked for support and resistance. His natural squares, the Gann Wheel, Gann angles, are all attempts to triangulate several independens sources of S/R.
Wanna trade like Gann in the 21st century? Use Gann numbers to put up some moving averages and trade off the confluences.