I know exactly what you mean there, I was the track prepper for go karts at Greensburg the last 2 years. They only occasisonally raced there, so every time I had to start the monday before the race with grass growing out of the track. I had to disk the entire track up and water the absolute crap out of it. Then the rest of the week was spent smoothing it out and trying to get rid of all the hills that the tractor pullers had left. By the time I was done it had to be nearly glass smooth because with karts there's no suspension to soak up the bumps.