[Penelope_Grey]

What about; if there was a MOD which actually made the U-Boat, less vulnerable, say, a MOD which restored the bulletproofness (that even a word?) To the U-boat so that machine guns don't cause you to lose Hull Integrity? Though that would seriously reduce the danger of aircraft again right back to a stock value, but for the more inexperienced players, it could be a great training tool so they could learn how to position the boat when they want to fight a plane, or allow them to learn when to crash dive and when not to.

I wouldn't use it, because planes are no issue to me, I like the fact they are a big threat, as in reality planes bagged more U-boats than the destroyers did.