John I agree with the security thing. These wheel lock/chocks are cast aluminum and can easily be broken with the swing of a hammer. They are the best, most secure, easy to use wheel chocks that I have used. Crossed chains in the front and rear on the trailer pad locked to an anchor secured, concreted in the ground, is what we do in Florida to keep the units from being tossed around by high wind. It won't prevent someone from stealing it but it will make them take a little extra time specially if the chain and lock are case hardened.
Keep the shiny side up.
WBCCI # 348
Past Region 3 President
Past President Tidewater Unit 111
Rick Bell in "Silverbell"