If I wanted to have a competitive club of some sort, I'd go join a clan and play Unreal Tournament.
I'm here to enjoy myself in the middle of the North Atlantic while I wait for some unsuspecting supply convoy, thank you very much.
Nothing more. If I don't sink an ounce of shipping on a patrol, then so be it. The thrill is in the hunt, not how much I bagged. Just this landlubber's $.02...