Bloc staircase jump: I know you need a strafe, but do you have to crouch jump? I always bang my head against the ceiling

Do you need 333 fps for the crash helicopter bounce, the downpour rpg jump from the tractor on the house or the strafe jump on district by atze, in the demo District_jump_3?
I need to know if these jumps have already been figured out:
You can get on almost all of the countdown blast shields and from one blast shield you can get on the wall near the containers, all without stacking or rpg.
On Wet Work, its already known that you can jump from the mast onto an invisible wall on the edge of the ship. But, you can walk to the bridge on one side of the ship. In all the videos/demos i have seen about this jump, no one has actually done that.
Finally, its already known that you cant nade jump in cod4 because of the nade's power. I've found out that the nade doesn't even have explosive power. I tried it with god mode. Was this already known?
LOOOOOONG post.
Solidshadow