Great work! There's got to be some defining factor to cut a trade and I think you have just found it. This takes the volatility from the price movements out of the equation. The only thing for me here is it's a lagging indicator that we need to be careful with, i.e. don't want to be down 30% waiting for the ema exit signal, especially when there's too much pressure on the 65 and the 50% fib.
You have also just found a way to trade the 1st of the 3rd wave! A quick look at some of the current setups and I'm seeing minimum 50% on all of them, and over 100% on some. This could be a way of catching w3-1, OR, wave C in a down trend correction, which I think some of these setups that fail are just that!
If you get time, check this out and make sure I'm not seeing what I want to see!!!