I have had very good results on wet ocean beaches. The one time I had my Sandshark in the shallow surf it was kind of noisy ... but I was running in VCO mode and did not go to Normal mode. I went back up to the wide wet beach area and worked that for that beach visit. I have had a couple of hunts in brackish tidal rivers and ran in Normal mode and it behaved wonderfully. I tried VCO and it was a little noisy in the brackish waters so switched to Normal, it quieted down and brought up some long lost coins, a silver bracelet, fishing lures, lead weights and of course bottle caps and tabs. Next time I have it at the beach I need to try Normal mode in the water. Other than my needing to learn the detector better, it balances very well, is easy to swing and found good things for me!
It is much easier to swing than the CZ-20 I have. I may need to do a custom shaft for the CZ. The Sandshark will find chains that the CZ will miss. I tested the chain found with the Sandshark with the CZ and the CZ only saw it in autotune and not very loudly.