I have played around with different positions and orientations of the rockler hinge, but I just can't get it to accomplish these tasks. The tray support "shelf" either drops way to low to support the tray, or the top pin would need to float on the tray itself, allowing it to go from the top of the tray to the bottom of the tray, and maybe even a little forward to back... and even then I am not sure it would work, nevermind being very impractical. I have only seen one other tray lift method, and it was in a Jewelry Box book I saw at rockler. It involved two arms; however I cannot quite recall exactly how it worked, and I can't seem to apply to my case with any kind of success.
I hope this can be followed, perhaps even someone has faced this issue, if not, I will try to draw some kind of sketch or something... when I figure out how, ha. Thanks!