You should add sea planes to the game without using figs and tacs. But then as the war went on the normal planes can find the ships. For tac bombers if sea planes and or ( fig, tacs ) find ships and or subs, they get a first strike shot for first round only. Attacker picks the target.
So tacs FS hit surface subs @3 and ships @3. If the tac misses the sub, then it can dive now. If tac misses and sub dives then any destroyer in same sea zone gets a depth charge drop @2. On 2nd round or later all tacs attack and defend @2 since they dropped there payload.
I’ve been using this tac, sub and DD thing for years.