When i know there is a hostile submarine out there but cant localize on him(Had track but he went silent) i like to provoke him by going flank in general direction with at elast 2 tubes ready to snapshot. He will most likely fire on me after a few minutes. when he does its all over for him! I snap back at him drop CM's and go evasive when ive cleared the initial datum i drop another cm to be sure head off in a new direction that will put me out of acquisition cones for both possible intercepts and go silent.
Its a gutsy tactic i know but my evasion game is top notch

ask anyone who has dived with me it hasnt failed us yet.