Finally tried out VTOL, wasn't as hard as I thought it would be but I still have no idea how the targeting works. Tried the tutorial for it but it only told you how to use the cannon and hydra rockets so it was quite useless. Turning off flight assist fucks up so much I don't see why you'd ever want to turn it off but I guess it has it's use. 

Need to play it more to get a hang of the targeting system so I can actually fire off guides missiles.