That was one reason we elected to make the SD antennae an "On / Off" instead of "Rise / Lower" in FotRSU... Helps immensely in that regard. My mind is blank on the details, but just a change in the Commands.cfg - One problem with this technique though, is that you lose the ability to be at periscope depth and raise the SD above the water and "see" planes like that... and if memory serves (abysmal failure at times), you do have to adjust "Radar Depth" on a few of the subs afterwards (and lose "Decks Awash"), because they otherwise sit too low in the water to get the SD above the "surface"...
