Went back and got one of the targets we used in class last weekend.
The head measures 6" High and 6.5" wide with the 1" black square in the middle. So as I recall I was holding at the top of the head which means 3" high. And I was consistently hitting the black square.
The black "bull" in the middle of the target measured 5.5 inches in diameter meaning I was holding at the top of the black and making COM shots or about 2.75" high.
Huh...I thought that bull looked about 6" across.
In any case "holding" isn't exactly what I'd call keeping the dot moving in a circle in about that location when you are doing timed cadence drills...