I am using beach sens in all my hunting...The guy from down under took it diving in the salt water in beach program ...he adjusted it to run stable.Great video. What I call the "wash" area or where the waves rush over the sand is the most important area during the summer months. Did I get it right on your video that you are using the Dive program instead of Beach or Beach Sens in this wash area? It looks like the max frequency on the Dive program is 14kHz, which is a bit disappointing if its the only program to avoid chirp in the wash. There has got to be a way to use the Beach program without chirp in the wet sand low tideline area where waves rush over? The Equinox performs flawlessly in this area on Beach 2 program which uses the higher frequencies. Now out in the water, the tiny little things are not much concern. I can see using the Dive program if necessary. Can't wait to get the machine to do some testing!