[Schöneboom]

To bump up realism, I ignore single ship reports, and convoy reports, too, when the weather's rotten (it never improves by the time I make contact anyway). In addition, my submerged shots are with manual targeting, the "notepad" version. I usually shoot anywhere from 1000 - 3000 meters. As the miss rate increases, the eels get used up sooner.

Even so, on my latest patrol in 1942, I bagged 8 ships, which is rather a lot for a month's work. I don't expect that kind of tonnage for much longer. Now I gotta admit, if I really want to make it harder, the first thing to do is never return to previous saves when the current attack goes awry. This is distinct from the DID approach, in that I'm not referring to impending doom or actual game death, but just when things don't go according to plan. "No going back" is really key, I think; that means, once the attack starts, don't go back, and don't save again till after you've disengaged (the enemy is out of range). If you're alive, and the boat still floats, keep going forward, never back.