Hmmm…..when I practice, my puller chooses the trap. I have no clue where the bird is coming from. I shoot low gun. Very often, I have no clue how in heck I hit the bird I have barely seen. Often, I swear my gun is possessed since it breaks the bird without my conscious awareness of pulling the trigger. The darn thing shoots by itself. What method? Who knows? Maybe an instinct-blend.
In tournaments however, slow developing birds can be shot pull through or sustained -depending on the orientation of the report pair second bird. True pairs, swing through or, spot. Dropping floaters, pull away…..
The mechanistic planning/choosing of method before a shot is taken, eventually clutters the mind and leads to indecision. My preference is to BLEND methods. See the bird, shoot the bird.