I use the FA Stance addon http://www.armaholic.com/page.php?id=19017
I think FA Stance should be a feature of the game that BIS supplies. It is very difficult to keep track of what stance you are in without it. In real life this is never the case, a person always knows if they are standing, crouching, etc.
I completely agree... I find myself coming out into third person view a lot just to see what pose I'm in. I almost feel as if the key system between going prone, crouching and weapon raised movement needs to be re-worked. I don't like how I can't just stand straight up from prone, I have to hit crouch first.
Keragon: Pressing Z will make you stand straight up from prone, you dont need to crouch first