I think it is best to give an arrow on the bar after these conditions are met. When the ADX is blue and the EMA indicator is in trend mode, place an arrow on the next bar after close.
Traded this method on a range bar chart yesterday and got my head handed to me with using tight stops. What seems to work exceptionally well on heavy volume days seems to get wasted on days like yesterday.
Perhaps one thing you might want to do if this procedure is so easy is to make a screencast and post it for the forum (I am pretty sure Jing is resource light and easy to use although I never tried). This way I don't have to feel like it's coders against thinkers anymore. I would like to join the darkside