Nice one!
Really, the good thing about sh3 and the GW mod, is not how realistic it is, how many tons you get per patrol, how hard or how easy it is - its how much you enjoy it.
If you use a type IIA boat at the start of the war like i do and get 10-20tons per patrol and are happy then good on you! Or if you prefer 1944 with type XXI boats with all the trimmings to deal out some carnage, then again, good on you!
If you enjoy yourself with this game, whatever you do, then you cant ask for more!
This is one, only one (!), example of someone enjoying themselves with this game and with the general mood lately on these forums, people need to learn from this guy.