I saw a post on a local Facebook forum asking if anybody had a waterproof metal detector. I answered and got a response from Marcy that her husband lost his keys in 3 feet of water. They had tried to use a rake to get the keys but had no luck. They keys were lost over the side of a dock with muck about 12 inches deep. I drove up to the location and got in the water and immediately got stuck in the thick muck. It was very difficult to move and turn around. I ended up getting a faint signal I told Marcy was not the keys but dug it anyways. It was a piece of aluminum about 10 inches long. Searched a couple more minutes and got a stronger signal. I told Marcy this signal should be the keys. I was trying to dig the signal out with my T-Rex scoop and having issues because the muck was so thick and deep. Just then a neighbor walked past and offered the use of her large magnet on a rope. I ended up trying to drop the magnet hard into the muck to get it deeper. After about 5 tries the keys came out. I will be adding a large magnet on a rope to my equipment I take on jobs from now on. Now Marcy and her husband can get there vacation started.