Judging from your diagram, it is hard to see how it could work without significant interference of one element with the other. Just because an antenna "loads" does not mean it radiates well, or even much at all. A good deal of your power could be heating up the ground.

If you ever want to try a practical test, I will be available just about any evening you choose -- except tonight: On Tuesdays I hold a regular bullseye pistol match and tonight I also have a gun club meeting. Any other time, however, I will be happy to give it a shot. PM or email me as you like.