Based upon some of the comments in this thread about shell performance and water, I get the impression that some of you guys must hunt ducks in a wetsuit, under water, breathing through a straw --- Rambo style.
With all the waterproof clothing, blind bags, dryboxes, hunting coats, etc available and possessed by many, it is hard to believe that you could possibly get your shells as wet as professed.

But, I guess if you were hunting from a leaky boat, with no waterproof clothing, in a hurricane or monsoon, the shells could get a little damp. That is when it is time to fix the boat, buy some waterproof clothing, or head to the house.
Just because the drylock ads depict a guy leaving his shells in the bottom of a boat filled with a foot or two of water does not mean that this is a good practice --- a tad lazy if you ask me.

You can't drink all day if you don't start in the morning.