Do pillow wedges work?

Hi Andrew,

I'm having a hard time finding bed risers that will accommodate the width of our bed posts (3.5"). The largest I can find are 3" wide, so I'm looking in to other options. I found pillow wedges on amazon that have an overall rise of 7.5" and wonder if they might work in the same way? Thank you very much!

Foam compresses, so not ideal, it also causes us to overheat and sweat. Best to incline the bed correctly.