There is a reason that we go to half size ahead of big numbers like Trade Balance. The sessions ahead are often dull and don’t go far, and then sometimes spike on the news. In this case, there was no spike, but we triggered both the long and short and went nowhere, so better to be half size. See EURUSD section below.
Here’s a look at the US Dollar Index intraday with our market directional lines:
Triggered long at A and stopped. Triggered short at B and stopped: