I had 25 rounds of .45 ACP on me, so if he had been anything but compliant, he wouldn't have left standing up. He and is companion understood without a doubt that they were not welcome.

People like this don't understand subtlety. You pretty much have to hit them in the face with a 2x4.

Be aware of your surroundings folks, and those who enter your personal space. The local PD were happy to know that all was caught on camera, and the dirt bags wer not so happy to know that there were cameras all over the property.