Asp: Top and bottom point defence overkill?

[crushdepth]

So I just got my asp and put a point defence turret on it (top centre hard point). I'm wondering if field of fire is important? Worth sticking one on the underside hard point as well for 360 coverage? Would an ECM be better?

I'm also running dual chaff launchers, which lets me chaff continuously if I feel like it

 

[cygnusa]

Unsure, but I have seen a number of larger NPC ships (anacondas) with multiple point defence turrets mounted. I would suspect that each turret has it's own firing arc. So if someone shoots a heatseeker and if you don't have the proper facing... the point defence turret won't do much.