[Hitman]

AFAIK both GWX and NYGM model this to an extent. Since the SH3 sonar geometry is tweakable, you can decide which area itw ill cover, however IIRC you can't set a different intensity for different parts of that area. Anyway, I think that both supermods model sonar geometry in a manner that escorts will get a faint echo when you are at peri depth, but not the full echo. That is achieved by setting the minimum depth of the sonar beam to something that allows it only to see the keel of your U-Boat or such, hence giving a smaller return. So I would say that if you are presenting your bow or stern to a pinging escort while at periscope depth, he will not be able to locate you,

BUT

because SH3 units will only use one sensor at a time, if an escort starts pinging that's because he already detected you by other means -visual, by spotting your periscope, passive listening, etc.- so if you hear him pinging at you then you have already been detected and if you stay at peri depth he will ram you even if he can't locate you by active sonar, and once close enough he will be able to hear you anyway.

Therefore the use of this tactic has its limitations in SH3.