Thanks for that suggestion. Unfortunately, I doubt it would work. This system bounces around quite a bit under normal operation. Imagine a weight on the end of a wire being dragged across a field or pasture. The weight gets caught on random twigs, mounds of dirt, tufts of grass etc. It jerks around quite a bit! This unit is mounted on the receiver hitch of a pickup and driven with a 5 hp gas engine. The weight tied to the end of the wire provides tension to keep it tight on the spool. I'm starting to think that there is not an easy/cheap solution to this issue. So at the moment, operator awareness will remain the main safety feature.