I'm holidaying soon at an area with salt water beaches, and when detecting there I use the Gold Bug Pro in All Metal and use the 11" DD coil...gets good depth, and, I think, does pretty well. Does anyone have any knowledge of the 10" DD coil on the GB. and how it compares under beach (saltwater) conditions with the 11". I know they are about the same weight....is there any advantage/disadvantage with one over the other. Thanks for reading. Looking forward to replies. HH