First of all you have to learn the difference between a DC run and a passover run. Nothing worse than giving away your position if it is the latter.
If active sonar (ping) hasn't detected you they will attack the last position they have heard you with passive or active. If far enough away from that blast area then keep quite and cool let them pass overhead, dont give away your position with high screw revs or sharp turns causin cavitation, they will pass overhead on their way to the drop zone.
If they are pinging you detected then you are exposed and you should make every effort to avoid the active sensor making a sound is not as important as avoiding the active detection.
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