This is pretty impressive. This course aerifies all of their greens manually like this, using this metal template. The plug is pulled and and disposed of in the blue bucket. This is a golf course in India, where labor is paid very poorly and the modern equipment that we are accustomed to in the US is not available. It's pretty impressive that this particular course does this despite how big of an undertaking it is. I didnt get to see how long it took to finish 18 greens- obviously that would be dependent on how many workers they could put towards it.