Hey Doc,
You are finding alot of good sites for security devices. Are you looking for something for yourself or just sharing your discoveries? How do you secure your trailer?
I'm still not sure what I might add to my trailer to further the deterence effort. The ideal item needs to be very effective AND easy to use. Not too expensive would be nice, too. Since I have a coupler lock (muzzle) on the bullnose hitch, your focus on disabling tires sounds good to me as an additional measure.
The past day or two I've thought about maybe placing a sturdy gate right in front of the trailer and a strong fence panel right behind the back side of the trailer. I don't think fence along the sides would even be necessary. I guess that still isn't a bulletproof solution. Hmmmm. Have to think some more.
OkieG