Here is a posting of a Romik chart showing the TA analysis at the time I made the call in 2007 that we were entering a multi year Yen and Bond Rally. An individual using TA properly has tremendous predictive ability, but the real edge is in prudent risk/money management. It is laughable though to hear all the TA naysayers. (Everybody here uses TA in one form or another).
Extracting maximum gain you say? So why did you state you have lots of losing trades? Price Drivers is THAT great it's averaging 50% win rate, no better than most out there. You rock!
Guaranteed that profitable banks and big players use the bollinger bands first and foremost for analysis of entry/exit and direction.
Luck forms a huge part in successful trading, I can easily prove this, stop placement. Correct analysis, but stop taken out, correct analysis, stop not taken out.
We are all gamblers, as there is always a chance that you would get stopped out, it's impossible to calculate an optimal stop level, that's partially why we have liquidity. Any trade carries a chance of being a winner or a loser. In a sample of 5 lots of 50 trades you would have a different win/loss ratio, why is that?
The purpose of a good system is to replace luck by a systematic approach. Luck should be banned to the max out of your system. System is the opposite of luck in trading. System means know what you do and why. Luck is have no clue but make money by accident. Till one day a real accident happens and you run out of your luck too (wiped out).