I name this easy and effective trick after my buddy xav because he loves to use it so much. Basically it is a decoy with only one player participating. It requires at least two enemy / neutral pillboxes and some walls to absorb enemy fire. Of course it's best if the walls are already there for you, but it's relatively simple (although slower) to build them yourself. You start by approaching one of the pillboxes as if you were going to use the Hardliner Method on it (see chapter one). Make the first pass and get the pill respectably angry. Instead of waiting for the pill to cool down, move behind the second pill (and several walls) and let the angry pill kill it for you:
You can then go back down and finish off the original pill, which is by now quite calm.
Hedgehog told me about a fast and deadly version of the xav he calls the Sluggo Flyby. There is nothing essentially different about it from what I said above, but it is a good demonstration of how speedy and effective the trick can be.
Charge at the first pill and shoot it five or six times. Keep moving toward the pill as you are shooting, then circle up so that the first pill's bullets start hitting the second pill. Continue driving forward, keeping the wall between you and the second pill. You will probably be hit a few times. You can then return to pick up the dead pill or finish off the first one, depending on how much time you have. This maneuver is high velocity and has just one disadvantage: it may take a couple of extra seconds to pick up the dead pill because of the pill you pissed off to kill it.