Pretty good scores there.

I once played Track and Field for over 4 hours on one quarter, my score was over a million I think. It was ridiculous. After a few levels, the qualifying times and distances did not change anymore, so once you mastered those, you could keep playing untill you got tired of it.
Never seen one with a rollerball, but rollerball control panels for T&F do appear on Ebay ocasionally.
Speaking of cheats, I had some Happ ultimate joysticks on my CP and I could use those for running. The ultimates had so much "slop" that you could push it to the left or right, then release it, then catch it when it sprung back and then release it again, etc... It was pretty cool.
I have seen people use a pencil also. There was one joker I saw once who used an electric toothbrush.
Apart from enablling the cheat in MAME, does any body out there have other creative ways of cheating at T&F, ?