How I cooked our New Year's pork loin
I don't like stringy meat, so I cut the 3 pound boneless pork loin in half against the grain. Then I rubbed salt/pepper/light brown sugar on all 6 sides of each of the 2 pieces, and seared them off in the cast iron skillet.
Then I layered it into the crockpot -- a layer of sauerkraut with some light brown sugar and pepper, then I placed one of the pork pieces on top, then another layer of sauerkraut/seasonings, then the other piece of pork and topped off with more sauerkraut.
It came out great -- lots of flavor and no long pieces of stringy meat. I think I will do this for pot roast too. Maybe not sear it but definitely cut against the grain.