Mixed bag of questions

[Poor Old Spike]

Hi, I've had DW for a while and like building my own missions.
Call me thick but there are still a couple of things I haven't yet figgered out and would welcome advice -
1 - With Truth 'off' we get wireframe unidentified ships, I can understand that because it represents only the 'best guess' by friendly forces of what ship type it is, but what I can't understand is why it STAYS a wireframe even if I fly my helo low and slow over it? You'd think the pilot would radio his ship to say "It's a type so-and-so", causing the wire to vanish and be replaced by a solid 3D vessel..

2 - Do Seawolf missiles engage helos? I flew my helo directly at and over a Seawolf-armed frigate, but it only fired its gun at the helo rather than the missiles,missing a lot and only shooting it down when it closed to half-a-mile or so..

3 - CIWS's can be set to fire auto which is great, but can SAMS auto-fire too?
Or do we have to manually target our SM-2's individually against incoming anti-ship missiles? By the time we've selected the exact incomer and issued the fire order, it could be almost on us..
Surely in real-life, SAM fire is much more automated?

4 - When we fire Harpoons at an enemy vessel, is there any way to fire them in a 'rapid-fire' mode a second apart (or preferably simultaneously) so that the enemy defensive systems will hopefully be swamped by all 4 Harpoons arriving together?
As far as I can tell in the game, Harpoons can only be made to fly at intervals of about 10 seconds no matter how quick we are with issuing orders via frantic mouse clicking, and as a result the enemy has plenty of time to shoot them down one by one..
Thanks