I think positioning it near the top, facing forward at... let's say a 15 to 20 degree angle from the top would work. If you're opening it while it's in front of you, you just look straight down at it, and if you're opening it while wearing it at your side, you turn to that side and look down, and it's still roughly the same angle. Might take a little practice getting it just right, but you can do that before you go out into the field.