Very simple. Use the standard 8-10 pips renko bars, I prefer 8 pips.
If you wanna use bitcoin, set it at 14000 pips(which is about 10 pips).
So you wanna go to the four hour chart, and look for 3 bars and one candle reverse. After you see the price action setup, enter on the 2nd bar(in pictures). For me I put my take profit at the end of the 2nd bar, so I'm guranteed 10 pips every trade.
Also, to see if it's a legitimate 3 bar reversal switch to the 1hr back to the 4hr. If the 3 bars setup dissappear, don't TRADE! I Repeat do not take the trade. If it still shows up the setup when you switch time frames, ok then those are permanent renko bars that will stay there.
Here's how many times it worked on bitcoin. x is for lost, blue line is for win:
If you travel scroll over left more, you will see it worked pretty much all the time, even though there were losers at times