Here’s a quick tip from Weber Rescue. Now before you ask why not just remove the entire. Let’s look into the background of this technique. The school of thought is you have 2 cuts in reinforced material, and 2 cuts in soft. If you were to remove the entire roof there are 6 cuts in reinforced material, the windshield needs to be cut out and glass management on all the windows.
One side note: when you cut the B-Pillar in the center instead of the top and bottom there is usually more material to cut thru.
Here’s an example: Ford Focus B-Pillar