My GN was stolen once and had an unsuccesful attempt on it again a few years later. I've learned from experience.
Here's my thoughts.
It's also my belief that alarms are largely ignored and easily defeated. Some of the best deterents are homebrewed kill devices. Since they are non-commercial and the possibilities are endless, they'll be harder to overcome. See
here.
Some other things that can be done are unplugging your fuel pump harness by the back bumper, take your ECM with you, get a steering wheel removal system, steering column collar, etc.
The Club and similar devices aren't too secure as they can be broken or the steering wheel cut to remove them.
Then you have the dreaded tow truck scenario. That's tougher to contend with since all the the above becomes null & void. One tip here is to select a head-on parking space with a barrier or sidewalk in front of you. An end spot is even better if there is a curb next to you.
Once in the spot, apply the parking brake and cut the wheels to full lock, preferably pointing away from the curb. This will make it a bit more of a PITA to pull the car backwards out of the space or onto a roll back. Of course, the car is still vulnerable but the idea is to inconvenience the scumbags as much as possible.
Best of luck to the recent theft victims.
