(Click to Enlarge Photo)
One difficulty with bent grass greens are their susceptibility to ball marks. It takes three to four weeks to heal an improperly repaired ball mark. If just ten people per day don't repair their marks correctly, that is 70 bad ball marks/week or 210-280 total per green. Hopefully you can see the importance of repairing every single ball mark, every single day!
It is very important that the ball mark is repaired correctly. When repairing a ball mark, think like a gardener, not a golfer. Take your time and do a good job gently kneading the turf back together. The repair, when done correctly, should look like no damage ever occurred there. There should be no brown showing and the repair should be tapped flat. This will allow the damage to heal in a day or so - as opposed to weeks.
If we could all do a better job with our ball marks, the greens would play much better for all involved!