strictly my opinion and based on my own, non-citable research:
1. i do not use targets per se but rather paper plates for live fire practice from the holster, thus eliminating the mentality to seek and sight in a 'bull's eye' whenever i shoot.
2. i pursue muscle memory, e.g., what feels right for my firearms sighting, verse sighting in as i am shooting to stop an attack instead of putting the projectile in a competitive and scorable pattern to be used against my peers.
3. i do not use laser equip'd firearms as i have researched shooters can get into a fixation from practice from using laser sights during actual live fire to hesitate while they wait to sight the bull's eye or center mass on the silhouette target.
4. my automatic stance is to pull from holster to fire position automatically and w/o hesitation and is done one handed. while the results of my training and shooting won't win me an IDPA award, but will, at least ensure someone being shot at knows i am upset at their approach and their continued advance could have dire consequences for them if they continue to approach.
caveat: i have a laser firearm (physically the same weight and size of my full sized carry firearm) w/lasr webcam scoring computer program so i can enhance the building of my muscle memory for myself while saving $$$.