In real life past 30m you wouldn't be able to raise the PS to begin with, the pressure is too high, it was not designed for use at such depth and even if you did somehow raise it you wouldn't be able to turn it for the same reason. Also you do not want to do any such thing. You want it to stay in its well safe and sound when deeper the 30m any other position will result in flooding. The deeper you are the more severe the flooding. (this is for you people that forget their scopes up after a submerged attack)
Maximum usable depth is maybe 25m and even then it will be hard to see and hard to turn it. Also when using PS do not exceed 5-6kts since in real life it would be bent backwards by the water resistance.
Down scope!