How long can you grind?

As long as there is something good on TV:

here's a diagram of my screen during training (periods are spacers)



_________
|............|.......................................
|.....TV...|.......................................
|............|.....................................
|_______|.....................................
................................................ME..........NEWT..................NEWT
................................................ME..........NEWT..................NEWT
........................................--------.....------------------------------


Basically, I have picture in picture so there's live TV in the top/right corner bout twice the dimensions of the minimap =D

So I hold down strafe and look at that