LSP552, I had not heard the term wobble zone but think that it's the same concept as area aiming, which I'll briefly comment on. Because only a dead man can hold his hand(or gun)perfectly still, the rest of us will have some movement. However, the precision shooters movement's must avoid canting the weapon as if it were on a swivel. That is, the barrel and butt should remain in line. Now, movement might be up and down or side to side or somewhere in between, but the weapon's front and rear must remain aligned. Hence the sight picture of this "perfectly aligned" handgun moves around that area in the center of the bullseye. I've taught many persons to shoot. After I explained this concept to them, they then practiced the basics with this idea in mind.
I taught school at various levels for 30 years and had good success because I could figure out why a kid could not learn math or writing or whatever I was trying to teach. For me teaching shooting was easy when I started with the above model and observed and advised and adjusted--things a coach does. Occasionally I would have a shooting student who was a fool and refused to follow instructions. I did not waste my time with these folks and would dismiss them. I never charged a fee to teach others. My biggest concern was safety. Marksmanship was next. I've helped some police officers who could not shoot learn the basics of trigger control and sight picture but never went past this step with them. I have zero qualifications for teaching tactical shooting and am ignorant of 90% of the tenets taught in this area. So kept my mouth shut .