i use an alarm picked up off ebay. it's called "SPY" i think, or something similar. it locks the starter on the bike if the alarm is triggered only way to unlock the starter from that point is to turn off the alarm. it'd be a big headache to load it and try to pull the wires and whatnot later.
i feel pretty confident with leaving it under my carport when the girlfriend and i are both at work. i think the actual alarm system was like 40 bucks or so.
thorn
