Meh, fuel, I don't mind
I tend to sail everywhere in Uber-savings mode, 9 knots for a VIIc that way I have plenty of fuel left to chase after convoys at high speed, takes forever to get anywhere though,
I also mostly hunt just in the western approaches or south of Ireland so I don't spend a whole lot of fuel in transit...
It's different if you're in a type II of course, but then the only convoys you're likely to find are the ones hugging the British coastline, and believe me you do not want to take out a t3 tanker with your canoe only to find yourself in 25 meters of mine-riddled water with a DD on your case
