The AMA is not really fair to compare to Canadian tracks or organizers. The AMA's position is "you are the best riders" so you will do what is right.
The AMA also races at the best tracks. Those tracks also have the best clean up crews. In Canada the clean up crews consist of the ,,,organizer. So SOAR,RACE they will do what is easiest for them.
The AMA does not clean the track,,the track crew cleans the track. Those crews also use the best liquid absorbing products available as well as blowers. {yes there are different types of absorball] So the comparison is unfair. I had the pleasure of working with the Simple Green Crew at the Montreal Indy car race what we think we know in Canada and what works,,,pretty far apart.
The good absorbing products are not bought at NAPA!
Sure the pavement is the same. But Canadian tracks and Organizers run on much slimmer budgets. So not allowing it is the best way they can reduce track clean up costs. You may think it is okay but the reasons why it is not allowed are for reasons you are not considering. Go to a SOAR or RACE event,,, who cleans the track,,,, Ken and Chris,,,,or the track day organizer,, why make their day harder?
Also if you ruin a track for your competitors in the AMA,, your life is not really great after for a long time,,just ask Chris Peris!