Two units connected by a cable, weighing a combined 1700 pounds, both dragged away by accident? I have a hard time imagining that. In an accident where something on the surface snags it, I can see one of the units getting pulled away and the cable snapping, but both seems unlikely, at least for an anchor. Granted, I don't know much about what a trawl net looks like in the water or how much weight it can hold.