I have been lucky at this game. I can usually get in close maybe 1500 to 1000 yards no matter what large mod I use. I go deep silent running, wait until the DD passes over me, or passes by me. Come up slowly in the middle of the pack and let them have it, do some quick maneuvering under a freighter and shoot a couple of more torps and bug out! I don't run faster than 2-3 knots while making my get a way, doesn't seem to be to challenging to me any more. Any one have any Ideals? Indy