Next time sink a few tug boats (shrug)...
Yes getting credits in GW can be exasperating espically when you get good hits on ships and have to retreat due to DD's persecutions and not getting credits because you were too far off when they finally sink.
Another favorite is lining up that perfect shot on a lone corvette only to have them see the incoming in the nick of time and veering out of its path.. or worse yet what I call a doink shot (dud).
Not only did you waste a torp but now you have to spend hours / days on the defensive.
I then decided to attack only merchants on that tour and ended up like you finding nothing (except tramp steamers) which I let go, running low on diesel and returning home.... sigh. Next time Ill sink those stupid tramps. (before someone asks.. the weather was too bad for deck gun
)
But frankly its a lot more realistic like this.