we like to call it more of an "instinct" shooting, reacting to the target, instead of the typical "bullseye" competition, we did that also later on, but have gone back to both eyes open.but I recall WAY back in the late 50's we learned shooting chipmunks in an old stone quarry, and we did NOT have time to "sight" in on any of them as they ran so darn fast...you heard them before you even saw them........all I can say as to "how" is point at something with your shooting hand trigger finger, and then close one eye at a time and see where your finger is pointed......that's a start.......
do and use what works for YOU, try them all, that's why there are so many forms of shooting sports...........