Stitch Hack: Scooting Trousers Shred Saver

Some of you are aware of my son’s interesting way of getting around. His scooting has lead to the following problem:

Which lead me to hack the following solution:bumshoew

The Bum Shoe, as I have designated it, has already saved three other pair of trousers from certain doom this week alone.
If I were a Doofenshmirtzian Evil Scientist, I would probably call it the Bum Shoe-enator. But for now, I am not, and mostly just calling it awesome.