Well Quillan, you are having much better luck than I !

That's the kind of action I've been awaiting. I should have mentioned, I too, am running TMO along with RSRDC. I'm not complaining by any means. I'm thrilled with the gameplay and very appreciative to the modders.
Maybe I've just had bad luck and/or need to be more patient. I must also admit I've changed carreers so many times due to the constant improvements with this game, that the farthest I've been into the war is maybe late 1943, early 1944. Although I've probably completed well over a 150 patrols, I have yet to run into a major IJN convoy, or even a battleship. Once I did come across a lone carrier and managed to put her down, but shortly thererafter, a new patch surfaced and like many others, started a new carreer. I'm dying to come across the "Yamatto" or anything close to a "battleship". I'll hang in there, what a great game this is. On the other hand, it must be the thrill of the hunt and the wish for the perfect quarry, keeping us all interested in playing. I am a true simmer at heart, whether it be a modern sim such as Dangerous Waters or my all time favorite, Falcon 4.0. (Yeah Multivipers!)
To close, my targeting has become superb, I just feel the need for more of a challenge than just merchants. Bring on the big boys!