So then yes, one DOES want to be trading in the direction matching the slope of the stream, but with the caveat that the ONLY time one enters a position is when the faster trend lines have pulled back in the opposite direction. Then again, this only applies when market conditions are not too extreme. When volatility and liquidity are pronounced, the 20-minute measures are apt to be lagging well behind price. Accordingly, under such conditions traders will need to wait for pullbacks to the "far" side of the 8½-minute price range envelope at 0.07% deviation (the causeway) rather than the 20-minute channel (the stream).
Bear in mind however that when carrying out the above procedures, traders must never lose sight of the towpath of the local canal, the banks of the river current or the shoreline of the ocean flow, given that there is a drastic increase in the statistical odds of the intraday stream and causeway reversing direction at such levels.