Photo by Gina Navarro-Brown. All copyrights belong to her. 2011
What is the problem with a split stance? What does it even mean to be in a split stance? Typically, what happens in a split stance is you do not commit to moving forward or backward in response to an attack. This leaves you in the same place you started and you are about to absorb the full impact of your attack that you are facing.
Remember, in Kenpo, we train the coordination of movements between upper and lower body. That means footwork is essential. Your base is essential in order to move your upper body the way that you want to.
I remember having this conversation with Sensei Chuck. In Yellow Belt, there is a particular problem with splitting the stance on Attacking Mace. Often times people miss it because they do not have the self-awareness to feel their error. If you simply think about what you are doing more, the self-awareness of what you do right and wrong will be more evident. At Yellow Belt, we move back for a reason. We let the beginning student have tools to gain time to react. It comes back to the idea that timing and distance are essential in pulling off techniques. It's important to analyze timing and distance in all situations.