Cardwell Style RSI / Defining A True Short. I reviewed the numbers from 04.09.2015 16:00:00 UTC through to 04.09.2015 19:00 UTC as they went into a sideways no-trade zone; a time in the trade that is most likely to pronounce your deficiencies as a trader. What was discovered was the Cardwell during this time came into contact with the 55B from down below but failed at the same time the crosses held for the short to resume.