3 point stance diagram

I'd agree. Look for balanced feet with slight stagger, flat back with hips at same level or slightly lower than shoulders, and head up. Players should be able to take their hand off the ground and not immediately fall on their face--but would eventually fall. The angles are going to be fairly individual though. They have a good stance if they can easily get in and out of it and can fire out forward or at an angle to either side with no change in their stance.