Hey guys,
I have trouble remembering all those extra rules, so I invented one simple rule I use with my friends that works okay.
Any sub in any zone cannot be hit by any dice unless there is an enemy destroyer present in that zone. If there is an enemy destroyer present, roll and count the dice normally. If there is not an enemy destroyer present, roll and count the dice as if there were no submarines present in that zone.
The submarines, however, move and attack normally under all circumstances. Its simple but still motivates both players to utilize escorts.
What do you guys think about this?