Curtis....some call it snap shooting, but there are a LOT of snap shooters that are great shots. There was a thread here discussing the miss use of the term a while back. Howard Hill, Fred Bear, Ben Pearson, Ron LaClair just to name a few....and I have several personal friends and hunting partners that are crack shot snap shooters. Guru, Charlie Lamb, Joe Coots just to name a few. I'm a snap shooter also.
Stance....everyone should have a 'backyard' stand for practicing their 'go to' shot...but in the field we don't get the luxury of the perfect stance most times. If you are properly aligned, stance really doesn't matter as form is really from the waist up.