Adding a 40-period Price-Channel-Breakout doubles the profit.
Is it a robust system?
That's for you to decide, but any charting + backtesting package enables you to apply these things and think about them.
Again - adding a bit of discipline to trading isn't the worst thing ever - Ihub boards are full of underwater traders who average down into oblivion just hoping and praying to get a lucky exit, but then when it's offered they refuse to take it... and then they ride the roller coaster all the way back down.
Run scans. Make disciplined entries & exits. Make $$.