As an insurance guy, I've gotta disagree with this, although ultimately, what coverage you decide to buy is based on your own bankroll, and tolerance to risk.
"Specified Perils," covers you for fire and theft, but not vandalism. And not for animal impact, or flying and falling objects. Frankly, riders who are running around some good roads are more likely to smack into a deer, horse, cow, elk, moose, dog or cat...and specified perils doesn't cover for that. It's cheaper than comprehensive, but again, you get what you pay for.
The insurance company's have a name for this, negative selection.
Probably not something you want to expound on a public forum. By all means, take precautions to prevent theft, but make it easier for thieves and use the excuse the insurer (be it private or icbc) is likely to screw you over in a claim situation?
hmmm.