Was out for about 4 hours around low tide with the Impulse AQ. Found some soft bottom cuts in the water then found a cut that had a hard shell pack bottom that was holding stuff ... maybe a hundred feet long and thirty feet wide that at low tide was only knee to waist deep. Spent nearly all my time working that hard packed cut in the water. Three ring day, two junk and a little 1.3 gram 10K white gold and a big chain marked 10k and it is not magnetic; all of it from the one cut. I need to find which box I have the gold test kit packed in and unpack it to do some testing ... non-magnetic is a good sign. The big chain weighs 51 grams.