I know, and it just gets worse doesn’t it? Houses are dangerous places aren’t they? There is always something broken, leaking, needing a fix or a new battery that is out of reach, and on a bad day something new to put up.
All this three points of contact stuff is all very well, but while you are up a ladder there will always be something to do that needs both hands working at full pressure.
It will also usually need to be done on tiptoe and at an angle of at least five degrees from the vertical so you have to lean your body weight in the other direction while you are doing it. So not today for me.