The Deus is claimed not to do particularly well on wet sand, it’s fine on dry sand but some people say it has no depth penetration on wet sand. I can’t remember who sent this to me (sorry 🙁 ) but I find it works great:
DISCRIMINATION = 0 I found that this worked really well for me on local Dorset beaches.
FULL TONES
SENSITIVITY = 85
FREQUENCY (whatever works, but 14.4 seemed to work the best for me)
IRON VOLUME = 0
REACTIVITY = 2.5
SILENCER = (-1)
AUDIO RESPONSE = 3
GROUND BALANCE = Beach (you can try “Pumping” but you may have to GB often. I usually just left in on BEACH = YES mode and it was fine)