For those of us who primarily water hunt or potentially exposed to significant rain, I have learned of a cheap, easy and helpful way to protect an electronic key fob that has worked flawlessly.
I have probably been in the water at least 25 times or more with this product and have had no leakage issues. The product? A condom. Yes. A condom. Works like a charm and I use two just to make sure.
I know it sounds funny but it really makes sense. I struggled with "waterproof" holders and valet keys, etc. but this solution has worked well.