I can see why people complain about this, I don't know of any other sport where you are limited on practice time. I could Just Imagine it now The Masters "I am afraid Mr Woods we have changed the rules you are only allowed 1 hole practice, 1 Drive 1 Chip and 1 Put". Maybe That is what happened to the guys in India this week, "OK guys only 6 Balls to practice in the nets then get out there".
On a philosophical point I guess everyone is in the same boat, that is where experience comes into it.
1 last question prompted by miss purple's Post, If you enter 2 separate Competitions or rounds whichever they are referred to on the same day (same venue), are you only allowed sighters before the first one? Because you can then be shooting the second comp against people who have entered this one only and are allowed them which would be a little unfair.