well, you could try and turn into those pesky escorts go to pd, fire off all your forward tubes, and if that doesn't work, go to flank speed, still go straight for him and just when he's about 50 meters away, blow ballast and go right down his throat, they'll never see it coming
or you could try the Med, go loiter off Valetta harbor and sink anything warshippy that moves, at one point I had 17 different warship contacts there at the same time , all moving...