After 38 years of shooting PPC I concur with many others who advocate keeping the trigger in motion. Go to Youtube and watch some closeups of Philip Hemphill (10 time national champion) and watch his trigger finger. The late Willie Stout who shot with the US Secret Service team many years ago was one of the best match 4 shooters I ever saw. Back then I asked him why and he said the only thing he thinks about in keeping the trigger moving. I took me about 20 years to believe him, but now I use the same technique and preach it every time I get a chance.