I just started. I have only participated in about 4 matches. I held off for the longest time because what they have you do isn't how I carry. But I have found that I shoot way different under the clock, so this is my only outlet to do that.
It has been a learning experience each time.
For instance, I don't point and shoot as well when it is farther out. I shouldn't engage targets with hostages, cause the hostages get it every time, even if the bad guy doesn't.
More bullets out the gun does not mean more hits on the other side.