A while ago I was watching a photography video on YouTube. The photographer had a small fold up mat that he could pull out of his camera bag and unfold to kneel on to keep his knees dry. I can't find the video now. Do any of you own any such item? If so, where did you get it. Secondly, we are going to the Oregon Coast in a few weeks. I would like to buy some sort of waterproof boots that I can wear to wade out into the ocean a little ways. Do any of you have some you can recommend? I'm thinking that I would like the rubber type....kind of like rain boots that would be easy to slip on and off. But, I will take any suggestions.