Useless to run up tiers.
This is on a $1/$2 play dollar machine. That means at most you can run $10 (Canadian) at a time.
So you would have to run 8 hands just to earn one tier credit.
In order to get to 2500 tier credits for the day (which is what you need to get optimal bonus tier credits), you would have to play 20,000 hands in one day, which is obscene.
In fact, for most people it couldn't be done, even if they committed the full 24 hour period to it.