I practiced balancing on the bike at 0mph today. The best I was able to do was maybe 5-8 seconds. Had to be the perfect intersection with the front tire facing the crown of the road....and preferably a slight incline.
Here I am when I was first practicing this on my bicycle in the early 2000s when I commuted to work by bike. I thought it'll be a cool "trick" to do on a motorbike. If I am able to pull this off for more than 1 minute, I'll mount a rear view cam to get driver's reactions.
On my bicycle, I was able to hold it for more than 5 minutes. I also learned to do it seated, and with only one hand.
https://youtu.be/MjEk1ZSONRo (sorry, couldn't embed vid for some reason).