Nicole Alderman wrote:
I've actually made a hot pads that way as Christmas presents. I also make them a little over twice as long and fold them over
This is exactly what I have done knitting hot pads (with cotton garden twine). Measure out how big you want it, double it lengthwise, and when you're done sew the two sides together (so it is double thick). I do a simple stockinette stitch because I LOVE stockinette (have been knitting for a million years but stockinette is my favorite stitch. Simple things, right). I have never knitted with real wool so I assume you would make it bigger than you want it and then expect it to shrink in the wash/block process. I also assume making it with wool means there's no point getting fancy with stitches/patterns, since it will just felt up anyway.
I am a newer crocheter than knitter but have been makign my dishcloths/hot pads from crochet recently, they seem to be a bit more resistant.