@ syncromesh. Cheers. Thought I'd knock it together after seeing the Twitch.
This was the easiest way I could think of. Using the F11 options are okay, but only for testing and not for a standalone. This is for people who know they never want to see the terrain for the level or are just sick of hitting F11 each time they test it. You merely have to delete it to see the terrain as normal. I also made the image a png, so it wouldn't copy over in a standalone (or at least that used to be the case). If not, well it can be deleted afterwards as it doesn't need a texture to work, just for you to see where it is in the editor
SPECS: Q6600 CPU. Nvidia 660GTX. 8 Gig Memory. Win 7.