I'm having a issue with my eye pro fogging up. I'm using the Oakley M frames and if I keep them close enough to my face to see under the top of the frame while shooting prone, the top of the lens fogs enough that they aren't usable. I can avoid this by raising the bipod height which of course leads to less stability and it's not a problem when shooting from other positions. I'm going to search around on some of the brand recommendations made on another thread, but with where I live I don't have the luxury of being able to try something on before I buy it. I was just wondering if rainex or something like that might work. Thanks.