My ladders have the feet that you can flip up and dig into the ground but when I saw the ladders fall from a distance, nobody was around and they just slid down. It was weird. Maybe ghosts? I am thinking of a bungee cord with 2 big alligator clips, one for the ladder and one to clip to the facia, roof edge or something so if something happens, the ladder will hopefully not fall to the ground. Do you use the ladder stops? How do you like them? Looks like a sheet of aluminum with a piece of aluminum welded at a 90 degree and rubber on the bottom. Are they aluminum or steel?