Here is what I do to make this super easy and lightning fast...
I assign key commands to Previous marker and next marker.
I assign key commands to Select from and Select Through
I create a marker at the point where I would like my export to end. I can create different points if I want depending on different purposes.
I hit Ctrl + A to select all
I then use my key commands to zoom around to the markers I want.
I can then use my key commands to select the beginning and ending of my export.
This is done in seconds and works like a charm. I absolutely love it.