Some teams use a Zooming LED flashlight, smaller than the maglite.
Here is one example:
http://www.amazon.com/Ultrafire-Lume...led+flashlight
I have one of these flashlights, when you zoom it all the way in you get a very tight beam, which is a square, the shape of the emitter, and zoomed all the way out its a very wide flood so this flashlight could give you the ability to set a size you like.
I wired a couple up last year for teams (different flashlights from unknown origins), I bypassed the flashlight electronics and directly drove the LED with one of these so I can dim it and wire it to a spike so it could be turned on and off:
http://www.ledsupply.com/03023-d-e-500p.php
That particular flashlight has a Cree XML which you can drive at up to 3000ma, I use the dimming driver because then if its too bright you can turn it back, also I had concerns of overheating the emitter (Which never came to fruition since it was only turned on when aiming)
I believe SPAM wired theirs last year through one of the inverters like we get in the KOP for the radios, just basically hooking into where the C cell batteries normally go.