my best fall was from the top of a 15 rung triple extension ladder fully extended. I was cleaning a planetarium roof, looks like a giant golf ball. First time up the ladder that day. bootom of the ladder was dug in the grass, i climbed to the the very top with a nice heavy weight tucker pole in hand when the bottom of the ladder gave way. Dropped the pole and held onto the ladder as there was nothing else to grab, when the top of the ladder hit the ground my knee caps where resting on a rung, and i also headbutted the top rung. This left a nice Harry Potter looking scar and f***ed both my knees.
Went full time wfp soon after.
Lesson learnt, its never worth the risk