A few guys I know who run their riggers on shorter track systems have taken the extra step of adding safety cables to them as a precautionary measure in case something like that were to happen. When I used to fish muskie alot on Lake St Clair we ran a 6 foot leash on all our down rods in case one were to accidentally release from the rod holders which can and does happen occasionallyI always write my name and telephone number on my downriggers and cannonballs should one fall over or get snagged in 100 foot waters.. If anyone finds them, they are highly likely to call you.
Pro-tipz