Floating Gun Case (is it worth it?)

I went on a duck hunting trip last weekend and fell into a marsh with my remington 870 strapped to my back. I quickly realized i needed a pair of waterproof gloves and a floating gun bag in case my gun got away from me completely so i decided to get the bag and skip the gloves because my hands are a lot easier to dry than my gun and i don’t want to let my gun sink to the bottom of the marsh. This Avery 2.0 floatable gun bag was put to the test in my small fish pond and I found that it floats but lets water inside so it’s not going to keep your gun dry completely but will give you time to retrieve it if need be