Well actually that was a good filter indeed.
Only trade EJ when EU-UJ lines up, and only trade GBY if GBP and UJ lines up. Otherwise no trade.
I am in the beginning of learning EJ pairs after only trade EU for couple of years back. I just being amazed how EJ jumped or dropped fast when EU-UJ is moving to the same direction.
Just tile any group of these three on your chart. You'll see what I mean. Just make a simple USD 100 in 1 lots trade because of this.