I am a fire protection inspection and on my journeys to different highrise buildings and office buildings, I have access to a lot of pallets. I just starting making pallet houses to sink. Takes 3 pallets to make and are quick to assemble. I use plastic zip ties to connect the 3 pallets into a triangle. put the first one in the water, it will float. then you can fastened the other 2 pallets to it using the zip ties. I have a lot of busted up chunks of concrete to use to weigh them down with from a construction site. they were removing a parking lot to build a hotel. just throw 2 or 3 pieces on the bottom pallet and thar she goes! only takes a couple of minutes to do it by yourself. wonder if anyone has tried these? if so, how'd they work? I dropped 2 of this kind along with 3 pallet stakebeds in the same spot. Cant wait to see what they will produce. i also tie a float with a slip knot to the first one i drop to make sure i can see exactly where it lands. Then i can drop the others close to it. a little pulling on the float and the string comes free so it stays hidden. easier than using a marker buoy. gives exact location of where it is on the bottom.