From the game play point of view, you would need to find the balance between coastal defence, and open water convoy defence.
Historically, it would be incorrect. In fact there were two choices. One, assign combat ships to convoys (direct protection of the convoy with focus on anti submarine and anti aircraft defence), second, assign combat ships to force fleets (patrol in proximity of several convoys with the purpose of fighting battleships and heavier threats).
Also there could be a third choice, which is recalling part of direct covoy escort in returning convoys (empty) which adds more forces to the patrol force fleet or to the incoming valuable (full) convoys.
From tactical point of view the choices would be to stick together or spread the convoy (but this was proven to be disastrous so I don't know if it would make sense to implement such option).
The whole coastal convoys don't even use the same pool or defensive resources (no battleshipos needed at all, proximity of friendly airports with customized seafighers that were useful for ocean convoys anyway, coastal convoys basicly mean pure anti submarine assets).
This is exactly what im aiming for....all about the player balancing what forces they have at their disposal. and designating the important regions and objectives to focus there defense on.[/quote]I don't think there were many such choices, and even if, these choice were rather obvious.
You could prioritize the cargo I guess...