These Boots Are Made For ...

Do you remember the song "These Boots Are Made For Walking"? Well, these boots are made for something else. Presumably there was a hope that the fencepost topping boots will delay or stop decay in the posts -

 

Most of the boots have lichen growing on them, they've apparently been there for a fairly long time. 

Wooden fenceposts usually decay at ground level, so I doubt that the boots will prolong the lives of any of the posts.