I read somewhere that seawater allows the detector to detect deeper. Do you think it would be of any value in regular soil? I also noticed that even in coin mode, at the beach, I can go from dry sand to wet sand and then dip the coil in the ocean without the machine making a sound. The seawater setting does not even need to be set. This works in coin mode as well as beach and relic modes. I did not try the other two modes. The ctx works very well for beach hunting.