CABLE shows Marabuzo gains

Once again the Marabuzo line has shown its relevance in providing trend recognition and levels that will hold corrective moves.
The chart below shows the rise in CABLE from this month's low. Steady gains from the bottom of the Keltner channel to the top but the 2 Marabuzo lines stand out, especially August 2nd where the pullback 3 days later held that point exactly.
Do you use Marabuzo lines as a tool for your trading? If not, why not?