I say sashiko style - I am totally unable to make stitches in neat rows.
But I like the idea of covering the whole area with stitching, which really reinforces everything
and the knit fabric I'm using, which seemed maybe a little thick, is being nicely flattened out by all the stitches.
These are my brother's thermals - the seat is worn, but the legs are good. So, I'm patching.