Yes, if you think security cameras prevent crime, fake cameras work as well as real ones. That's apparently where you started from.
Personally, I don't think they prevent crime. Criminals are criminals and they are not that smart or they would not choose to be criminals.
You Made My Point Exactly! "Criminals are criminals" and "they are not smart".
When getting into (or
breaking into) your boat criminals will either
1. Quickly open the unlocked door... or,
2. Quickly "BREAK" open your locked door!
With #1 - You have little to no costly damage to your craft... or,
With #2 - You have from hundreds to thousands physical boat damage!
Both ways you have the same products stolen.
With # 1 - You have much less hassel, much lower insurance claim, much less chance of insurance premium increase.
With # 2 - You have much more hassel, much higher insurance claim, much higher chance of insurance premium increase.
If locking your boat's door makes you feel more secure for good nights' sleep; by all means - - > Lock Your Door!