For the most part, lurker removed almost all (if not all) of the report lines from the Groups and Units in RSRDC. As for the 2nd question, lurker was not much of one for fellows coming into littoral waters and preying on the undefended...
besides that it would be very difficult to do "historically" speaking. ie: He did not build the mod for harbor raiding.
To improve your odds of finding targets, consult the convoy maps that lurker left in various locations about the different boats. Look in the Captain's cabin in some, the shelves in the control room in another, or maybe attached to either the phonograph, or the radio - I don't remember which...
