Hi, has anyone had any experience with using any underwater or waterproof/splashproof products with the a700? I have a surf session coming up and I'm looking at the possibility of using the EWA-Marine E131, which is what some have jokingly referred to as a 'ziplock'. I'm trying to determine whether the E131 will fit the A700, and just see if anyone has had any success using this or any other underwater/waterproof option out there. Not sure that I'm ready or able to spring for a $1500 Ikelite at this point.