Physically just moving your eyes slighly up 20 degrees above the horizontal plane of vison is enough to stimulate more alpha with eyes open. Use your imagination to 'look' through the top of your skull... no need to move the eyes to point of discomfort.
Also for getting information out of your inner mind during activation a similar method can be employed. Draw your eyes up toward the center of your forehead... or rather in you minds eye focus through that point, project your vision out in front of your 2 to 6 feet... that area is often refered to as the third eye and by focusing there you are opening up toward images that came from your inner mind. Drawing your inner focus to that area is also useful if you are attempting image streaming.
Alex