I've been in a few precarious positions atop ladders over the years, the "get you" one is where your reaching right or left which puts most of the weight on one latter leg. Today there was a 32" Dob for sale showing the owner on top of what looks like a 12' or higher ladder and I was thinking in order to look through the eyepiece one has to lean which puts you in that "get you" position. I wonder how many times people have fallen off these tall ladders? In a case where I'm on the top or close to the top rung its a good idea to have a spotter holding on to the bottom, but I suppose this is not always possible.