Unfortunately, that probably will eliminate virtually every cane system that I have seen. While I have looked at none of them in depth, every one that I have looked at demonstrates techniques with very mobile and physically fit people.The questions that I have for you are:
Can you walk or take small steps at all without the cane?
Can you use your off leg to ballance well without the cane?
If you can ballance well on your good leg, can you use the off leg for any degree of support?
I can take small steps unassisted, with substantial difficulty.
I cannot balance well on my bad leg at all. for example, I cant kick with my good leg
I can use the bad leg for balance while standing on my goodleg. kinda like the kickstand on a bike
the hardest thing is that I cant pivot on the bad leg. for example when using jo, I can pivot off the good leg, and use the bad one to arrest the movement, but not vice versa.
I refer back to my previous statement:
Striking techniques will be more viable than exaggerated pushes, pulls, or the fairly sophisticated grapples that I have seen in some systems.Based on what you have said thus far, I recommend as follows:
Use a cane that you can manipulate well in one hand and which is light enough to use without pulling yourself off ballance. It needs to be balanced well so that you can get a lot of return from small movements of the arm and wrist. It should also be sturdy enough to support your weight, as that will be its main function.