Living here in New York for better or worse I know a lot of people with lojack on their cars and bikes. Two guys I know have had their shit stolen with it (one car, one bike) and both times by the time the cops got there it was too late. The car was declared totaled by the insurance people. The Ducati got torn down too with the instrument cluster, some electronics, wheels, an expensive seat, pipes and rearset all removed brutally before the cops found it in an abandoned warehouse, Lojack pinging away. As for cameras, there are lots of them around here that record all sorts of shit, but just try getting the cops to check out the businesses that have the tapes (or memory) rolling. They usually tell you something like, "Aaaay, Buddy, you watch too many cop shows on tv." Sometimes I feel like my bike's relative safety is more due to the bigger, crazier shit that happens all around it on a daily basis.
While there's obviously no way to make a bike theft proof, I go with prevention rather than trying to get it back. And you should too, SnuffyZX. Heavy chain with the lock and chain NOT touching the ground (a thermos full of liquid nitrogen and a hammer makes a lock shatter like glass - they pour it into the keyhole casually and come back a few times over ten minutes or so, very quiet to do), a Xena alarm/disc lock, and the Beretta M92 that lives next to my bed which is next to my window which the bike is chained to the bars of. The Xena while being sort of a lightweight among alarms is sensitive, portable and doesn't draw on the battery. The latest trick is using a portable hydraulic cutter which aparently will go through a hardened 1/2" lock shank. I've got to see it to believe it, but apparently bike and motorcycle stealing gangs/groups have been doing it.
You can't ever really relax and over the last 25 years I've had problems, but I 'solved' them one way or another. Most of the neighborhood kids know that the old guy with the bikes will go mental on them so that word kind of spreads. It may get mopped some day and if it does I'll feel very sorry for the piece of shit who takes it; if I see him he's gonna look like a sprinkler.