No, I can't say that I have. To me the true holy grail is risk management. Sure I have some systems that work pretty well, but my best system works in the beginning of bull markets. It catches most of the really big winners. It's boring, but it works.
Holygrail so what do you trade the other 95% of the time that the mkt is not in a beginning bull mode? Sorry, could not resist...
Yes, I discovered a holy grail. It was flawless and was working really well...until my dog started telling me to kill prostitutes.