Bellman,
Regarding the wakehoming issue.
SCS has moddeled object interaction with the environment in such a way that all things leave a wake that is independant of surface cavitation. All wakehoming torpedos home in on that environmental disturbance, not a return from the target itself, so the torpedo seeker itself ignors db flags. However, the AI will not fire this weapon at subs as I've set the flags (the purpose of changing it), nor can the user from the Nav map or firecontrol, unless you reclassify the target or use a snapshot. The fact that you can still set the run depth of the torpedos, combined with the fact that subs do leave a wake at depth, means you can try to use this as an ASW weapon, but the in-game feel would be the same as in real-life, using the weapon in a way it wasn't intended.
If you want to use the wakehomers against subs, I recommend it specifically for littoral contexts and at short-medium range mixed with active/passive homing torpedos.
