One of the latest versions of the LwAmi Mod introduced sort of a walkaround for this. Meaning a sub will depending on weather and seastate be visually detected (by the AI and thus automatically) if at PD or shallower (or so, for details see the readme). Coupled with the modified Mavericks on the P3 and Hellfires on the Helo this feature should urge all sub skippers to seriously reconsider if lying in wait at PD with all masts up and waiting is such a good idea.
