Just embed RFID tags into the foam rockets, build a detector into the tank. Soon as the rocket gets within range, it's a hit. I suppose there'd be some logistical stuff to work out, but still it would work pretty good. (I'm still talking about getting a real actual tank... If you can afford to get the tank, you can afford to muck around and develop a perfect system.)
Edit: NM, 'logistical stuff' = an array of lots of really short range detectors all over the main hull of the tank, NP!
Last edited by DrChi; October 4th, 2007 at 13:06..