On a couple corner cabinets I made, I ran an 1/8" thick piece of material, maybe 2" wide (just enough to cover the pocket hole) from top to bottom. I radiused over the edge that faces the inside, squared edge up at the faceframe. It goes on with a couple pins, and covers all the holes in one quick application. You have to make a little notch in the shelves, but it trims it out quite nicely.