We had a long conversation last night about pencak silat, training in basics, universal Truth, intuitive versus intentional learning paths, and various other tangential topics. It was really good.
I wish at those times that I had something to capture the conversation because there were many, many kernels in it that have taken me many years to learn and a good portion of which directly relate to why Pencak Silat Pertempuran is structured the way it is. Plus, it's the type of thing that can never be repeated because it's based on relationship to the people asking the questions and their responses of understanding or confusion.
In any case, understanding some of these major ideas will aid you as you study the system in knowing what the next steps are.
That said, here is one of the ideas in summary fashion:
PSP is NOT ambidextrous.
So why do you practice things on the left and right sides respectively? For one primary reason and a few lesser ones.
1. It is a system, intended to be available to all those who want to study it. Which is to say, that it is not strictly limited to right handed practitioners or left handed practitioners. Because of this, both need to be taught.
2. And that is because I teach everyone as though someday they will also teach.
3. Teaching both left and right sides demonstrates more clearly the principle of relationship and how changing that relationship changes the outcomes.
4. In a pinch you may HAVE to use your weak hand or leg to perform something—recognizing that it would be better on the "strong side."
5. Not all things performed on the "strong side" are actually strongest on that side. There are kicks that or strikes that you likely perform better with one side than the other and until you try it, you won't know which they are.
For purposes of combat it is of more value to be great on one side than to be average on both sides. You can pick the side.