Good Idea XIII. I added a few notes into the first post to clarify the controls. I also edited the instructions that come with the download.

Messyhead, As a note, when you engage Stable-Hover the nose pops up a few degrees and the speed drops off to zero over the next few seconds. There is also an announcement "Hover Hold ON" or something like that. That's how you can tell if it engaged or not. Silence means it didn't engage. It targets your altitude at the moment you push the button. If it drops towards the ground (Hover instead of Stable-Hover) you aren't using the correct Hover mode or it didn't engage (speed>40knots or the joystick not centered).