RNR Economy Trident Series Throw BagRock N Rescue Economy Water Rescue Throw Bags are used anywhere the potential for a water related emergency exists, such as swimming pools, white water rafting, boating or any related sport. Throw bags are a superior alternative to heaving lines and ring buoys as bags can be thrown further and with greater accuracy. Our bags do the job better, quicker and more efficiently. Rope: 5 16 in. (8mm) Weight: 50 ft.: 17 oz. 75 ft.: 26 oz. 100 ft.: 34 oz.