Lefty, Thanks for sharing your system, and the help in better understanding Renko. I will experiment further, but so far I like it. I will continue testing, and will probably end up using Renko for my retirement account with a small position first, since there are less signals which is great. Also, Renko sure makes is easy for you to determine where to put a stop.
For my trading account ST, 5/30min charts I am experimenting with NERS.