Simple Renko trading NADEX Weekly Options, Daily Grains

I have been trading this system only a few weeks but it is a very low stress strategy:
I keep the Renko chart as simple as posible: Emini S&P for interday trading and grains (corn this example) on daily charts.
NADEX.com is my replacement of Forex which was a disaster. I checck the Sunday charts for S&P500 for direction and look at the daily S&P OHLC chart as a reality check. On Nadex is pick a close to the money option and trade in the RENKO trend direction. I have had success both in a quick profit in 1 or 2 days making approx $25 or $30 and closing the position early or sometimes doublé that by holding until expiration on Friday. I only trade the weekly options.
I trade the Daily grains the same way. I never have much luck on interday trading of grains but with small positions you can ride out the Price swings that RENKO ignores and pick up a trend that you can scale into slowly and take profits along the way.