[Wulfmann]

I think I said it, not Jason but we are also trying to find such things and figure out ways to make them act more realistic. Many times U-boats attacked and it was thought to be an aircraft or mine. Also by placing the ships at 900 instead of the 4-600 normal I wonder if that effected the way the game sees things. I have certainly had some that stayed away but also many that don't and anytime I hear a "We have been detected sir" (English transaltion) the escorts are on the way quickly. In the early convoys which may likely have a Frigate (Sloop in real life, Frigate to SH3) and 1-3 trawlers which means if you attack deep in the large convoy it might only be the trawlers that react and they are slow.
If that is not chllending enough start in 1941 or 42. You will not find the escorts so friendly.
Wulfmann