The reason I recommend stabilising the view is because IRL they had a rotatable split prism stadimeter. It creates two images which you align vertically to get the range. Then you rotate it, so it creates two images which you align horizontally to get the AOB. This is what Joe and I were trying to simulate with the verical and horizontal marks counting... but the relevant point here is that IRL although the movement of the scope caused the images to move, they didn't move at all
relative to each other which meant lining them up was straightforward even with a volatile scope.
Since we don't/can't have the two-image effect in SH3, scope stabilisation + mark counting seems to me to be the best way to simulate it.
Steve, about the deck gun being stabilised... I hadn't even considered that! I never manually fire the deck gun... I like to play in such a way that an experienced crew are much better than an inexperienced crew, so I let them do as much as possible. Deck gunning, flak gunning, sonar checks, watch duty, etc...
If they miss/fail I consider it to be a "realistic" consequence of having an untrained/inexperienced crew.