As I see it, there are no disadvantages to having stability and mobility. In fact, in my opinion that is what separates gung fu from the rest of the horde. The trick being, can both occur at the same time, and if so, then the task at hand is being able to effect a stable and mobile stance or movement. I touched on this topic on my website explaining how we do things. It should give you a good idea:
We emphasize the importance of having the beginner student develop a strong and well-structured stance with a low center of gravity. It is a traditional approach towards training, but remains relevant for Today’s practitioner. If you compare stance work to that of constructing a container to hold and transport water, it begins to make common and well reasoned sense. Build a paper container and the water would leak, as paper is too flimsy. You would fail to successfully contain the water. If you were to use concrete, then the container becomes too immutable and limits its effectiveness. The water would be contained, but in a limited and less practical manner. Too much of one is too little of another. That is why training in stance work should teach the student to build a structure or container that is both flexible and practical. The stance needs to become adaptable and mobile yet solid and grounded. Thus, the importance of proper form and development is stressed in practise and application.
The next phase of stance training becomes mobility. This is an essential piece, which enables the practitioner to apply the value of perfecting a more traditional stance. Emphasis is placed on footwork and transitioning.
We generate our power by opening and closing of the hips in and out of stance, as a result effective footwork and transition become fundamental. Now the practitioner can begin to work on the dynamics of stance work, such as bridging (closing the distance between you and your opponent), speed, distancing, direction, and commitment. Part I integrates with Part II. It is a systemic approach to achieving continuous competency. In the beginning, a student will experience less mobility, but maintain strength of movement through proper form application. As the student advances, so too does their ability to maneuver. Again, keeping in mind that too much of one is too little of another.
Execution of technique is third part of the beginner’s equation. It is important for the practitioner to become proficient with our various strikes and blocks. This becomes evident when the long arm (full arm extension) strikes are taught, as the various motions generate a great amount of power. This ties in quite nicely with stance work, as it is the function of one’s stance that must contain the power generated by the legs, the hips, and the upper torso. Our stance becomes the container to hold and transport our power, as was mentioned earlier using the example of building a container to hold water.
To further illustrate the importance of developing a functional stance with a low center of gravity, one needs only look to the element of Yin Yang. The stance becomes a study and practise in Yin, as movement and power becomes the Yang aspect of study. What is most associated with these elements, but balance? To have too much of one will mean too little of the other. This translates
into the common practise in other martial arts of adopting higher stances for greater mobility. There isn’t a balance, but more of an imbalance towards one aspect over another aspect. It is hard, long work to develop a good stance, and even harder work to be able to use it. We believe in teaching it right the first time around and allowing the practitioner the time and opportunity to make it work. This is one reason why kung fu is so much more involved than many other martial arts out there.
When everything is put together, the practitioner of Bak Hsing Fut Gar becomes a highly mobile fighter that is able to realise a powerful, fast and aggressive line of attack.