I go defensive, and it usually pays off.
Space full screen, turn invisible, punish 44teleport, and use 5C for when they sj.6a/b/c over your clouds and bell bugs floating around.
Being random helps too.
Also, 2C anytime you feel comfortable timing it on opponents landing from j.cloud.
They can't block when they hit the ground, so it gets rid of the cloud for free.
If your spacing is right, j.6D helps with this too.