I put the shields where I wanted them (and marked them) and used a large needle to poke through. Then when I pulled the needle back, I sat a light colored felt tip on the tip of the needle and made a little dot where the holes wanted to be. Found the holes with the staples, and shoved them through. After you get a couple staples in, then you don't need to mark them anymore- just follow the needle with the staple and push them in with needle nose pliers, and bend them over. Didn't seem terrible, once you got a rhythm going. Easy as pi.