Hangtime...
unfortunately the side balance goes up and down every 20 minutes or so. That is, the numbers may be {Bish 10, Knit 1, Rook 2} and then be {Bish 5, Knit 2, Rook 11} some 20 minutes later. So if you switch sides to Rook initially, 20 minutes later you could be sight seeing for another 20-30 minutes.
Of course I'm being very generous about the numbers...usually it's more like {Bish 5, Knit 0, Rook 2}.
Ex.