Originally Posted by
ng95
My personal experience with the overboard bag was that during extended trips water would almost always find a way in on rough days or during surf launches but this was due to consistent water being directed towards the duffel water proof roll whilst on the back of the kayak. They might be able to sustain a quick submersion as sated but placing weight on them whilst in the water, would always lead to ingress. This problem will not occur in the hatch however condensation is always something to consider. The ratings i believe are just are brand specific at-least in the case of overboard products, if you can find something with a IP code (ingress protection rating) it is a much more standardised and intern reliable indication of the products waterproof/resistant rating. Another thing to look at with the fabric style dry bags is the water proof rating of the fabric anything over 10,000mm should be adequate. (10,000mm = water resistant to 10,000mm or 36ft of water for ever 24hr period)
Nick