Often where I work the wind can blow ladders away from a roof, I could see how this could help with wind also. One time the wind blew the ladder sideways off a barn roof and onto my truck, broke the mirror and later the windshield cracked. I wanted the truck close for efficent access to tools and there were limited choices of where to park. In this case the rafters were soon exposed so the ladder got tied off after that. With out a spot to tie to these hooks would help. Also would help prevent the bottom of the ladder from kicking out. I like em.