On many occasions, while walking along a river shoreline, I have stepped on, nearly stepped on, or narrowly avoided stepping on a fishing rod that an angler has left lying on the ground while he attends to something else.
Unfortunately, a drab, thin, piece of graphite blends remarkable well into a rocky or sandy shore. Normally, when passing behind a group of anglers, I pay attention to what may be lying on the ground, but even when doing that I have almost crunched a rod or two.
I always try to lean my rod against something, jam the butt into the rocks, or even prop it up with my vest so it has a slightly more obvious profile. If I have to leave it on the ground I never turn my back to it.
I feel little compunction, and no sense of obligation to pay him for damages if it happens. His carelessness, not mine.