How can I hide Hud in SP Mobile (especially these annoying instruments) without invoking the command: //MainCamera>Camera.set_depth 10?

Let me explain why I want this.
Yes, the command surely worked best on hiding the huds, but when the camera is near a part, it'll simply dissapear.
Let me put an image to make it clearer.

This is the image before the command was invoked.

It looks cool, if only I can hide these huds.

And this is the image after the command was invoked.

See what I mean? It ruins the airplane itself. Where did the "walls" go?

So... I'm trying to search a way for this... But the problem is, I'm too dumb to understand this. So please help me.

Also if anybody is wondering, yes that is my F-15C cockpit. Still unfinished, but I doubt I'll finish it. It's already at 388 parts (I think), and I can't load anymore planes into my sandbox otherwise it'll lag so much that I can barely play.