I have had some difficulty seeing the screen on my tablet while shooting on etargets. Yesterday I tried using a "tunnel" and the results were favorable. I made a cardboard box with the width and height the same as my tablet and 15 inches deep. I placed the tablet in the back of the box and it was easy to position and see the tablet. Getting the tablet in and out of position in the box was awkward but I have now cut a slot in the side at the back and I can slide the tablet in and out easily.