Anyone have any unique ideas on how to prevent theft / vandalism on boats that are on a lift?

Well Shawn, I would get a motion light to start with. I see that Travis is looking for ideas for an alarm system. Other than that, keep your insurance paid.

A decent car alarm with a couple well placed proximity censors and a couple of 130db "paint peeler" alarm horns. <BR> <BR>After I had half of my tower speakers stolen right out of my backyard a couple of years ago, I installed such a system. Now anytime anything moves within two feet above or around my boat, the alarm warns them. If the system detects movement again, the alarms will go off defening anything close. <BR> <BR>These days, birds, neighbor cats, and chipmunks stay well clear of my boat.<img src="http://www.wakeworld.com/MB/Discus/clipart/wink.gif" border=0> It's also fun to see people walk up on it in a parking lot, and have it start chirping and warning them. People just don't expect an alarm on a boat.

All this talk about security. I bought two of these somewhere on the internet last year for around $25. They work great. One in the bow, and the other on one side of the cabin. Can't go wrong for the price. <BR> <BR><a href="http://www.securityprousa.com/noname8.html" target="_blank">http://www.securityprousa.com/noname8.html</a>

my boat insurance with a 100 ded covers $5000 of "Personal Effects" and i pay nothing extra for this coverage...so for 100 bucks i would get up to $5000 all new stuff...thank you burglars for updating me

<a href="http://www.solarilluminations.com/acatalog/Security_Lighting.html" target="_blank">http://www.solarilluminations.com/acatalog/Security_Lighting.html</a>

Motion Activated Flood Lamps and one of these <BR><img src="http://www.wakeworld.com/MB/Discus/messages/65921/459769.jpg" alt="Upload">