If I get to stand J early for the 22 that pillar is great for blotting out the world. If the queues are long, I sit on the bench at the exit end until the queues have subsided. I figure that if I'm at the back of the queue I'm no worse off and, if it's not my queue (Ok, so not an issue with stand L) I'm also no worse off.
If the weather is good and it's not busy season, I just wait at Milburngate. That's rare, though.
Edit - how the hell did that quote-post split happen?
RE: Durham Bus Stn