you say you're in DT56?
I'd say stick around, submerge to 20 meters (so you can still receive radio), do a slow search pattern and only surface for air and battery recharge and loiter until a convoy comes along...because it will definitely come along in a week or so.
once it does, I'd hound it all the way to Britain or until my eels run out, at which point I should be near to Biscay and home port.....
look at the map...DT56 is a definite hotspot
Been there.... done it
