Given the hit & miss nature of Interdiction I've been scouring the Net for some guidance. 

Here's what I've pulled up so far:

http://forums.mag.com/t5/Tactics-and-Strategies/Interdiction-Guide-for-All-v-1-6/td-p/558188
http://forums.mag.com/t5/Tactics-and-Strategies/Interdiction-strategy/td-p/559635
http://forums.mag.com/t5/MAG-Discussion/Interdiction-Vids/td-p/562055
http://forums.mag.com/t5/MAG-Discussion/Interdiction-Video-APC-Hunting/td-p/564287
http://forums.mag.com/t5/MAG-Discussion/The-New-Spawn-Campground-Interdiction/td-p/559734

Not sure how helpful any of it will actually be but its worth a look.  The last one is something we might want to watch out for tho (or turn it on its head and run an APC up the enemies spawn!)

Happy hunting

Malsta:)