I cannot come up with a reliable way to keep the ladder steady when it's leaning against the shed roof. I need to paint the trim two storeys up. When the right side of the ladder touches the roof edge at the point indicated by the arrow in the sketch, the ladder's left leg comes up off the ground a few inches. The ladder is then a-kilter, standing on one leg, and I'm concerned it will slide down the roof with me on it.
Is there something painters rig up to solve this problem, short of scaffolding? Something more reliable than a couple of bath towels draped over the drip-edge?
Scaffolding would have been the safest solution, but it was hard to find one in a timely rental (and it's in the back yard and inaccessible to a cherry-picker). I managed to jerry-rig a solution to the tippy ladder problem. My son said to me, you don't want to hear 'jerry-rig' and 'ladder' in the same breath. But the clamps actually held the ladder quite securely.