[Penelope_Grey]

Basically think of it as a two part game.

1939 - abouts 42, you should be able to reap havoc very effectively. You're goal, search and destroy.

1943 - 45, you're goal, survive. Literally. At this stage in the war, you need all your tricks, and then some. In a nutshell, here, the goal is not to sink things and reap havoc its to simply not get killed, and if you should happen to see a lone target then engage that.

You can attack convoys, but, you will need to be ahead of them, submerged and then you'll have to fight your way in probably, and when you do get in and unload the bow tubes and then go deep, chances are you're gonna die.

Decoys. Make sure you have them. They will if used right save your life.

This is not to say GWX is impossible it isn't, but its made to simulate the U-boat war better, and if you are going to make it through, you need to think as though you are there.