we had some go missing at an office building. kids walking by to school were stealing them to play sword fight with them... so I coated the two out by the sidewalk with axle grease after I drove them 8" in the ground. they stayed there all winter, had quite a few attempted removals judging on the marks in the grease in the spring.
Sure wish I could see mom's look on her face when her little rug rag came home with axle grease all over his pants after they tried to steal my stakes....
01 F350 Boss V-XT 9'2"/ Ice-o-Way SS Sander
05 F350 Boss V-XT 9'2"/ Ice-o-Way SS Sander
02 2500HD Boss V-XT 9'2"