To cut to the chase, I recently have been manipulating the Glock trigger like a good S&W DA revolver trigger. No prepping, and one continuous press. This has yielded good results at 100 yards, inside 7 yards, and everything I have tried in between. This method works especially well for me with just one hand. I also believe it offers a safety advantage, since you are getting on the trigger later, and skipping the "prep" step during the presentation which could lead to unintended loud noises. I believe the main reason it works well with the Glock trigger is, rather than try to turn the Glock trigger into a poor example of a 1911 trigger, you use the creep in the Glock trigger to give you a compressed surprised break, which minimizes anticipation.