After 6 pages, I should be able to end this thread. One of our locals has already solved this problem in the simplest of ways:
Buy a retriever, and then pick up foam pipe insulators at Home Depot. They're kinda like those "noodles" you see kids using in swimming pools, but they come in smaller diameters with a slit down the side and a hollowed out center for the pipe. Cut it to the length needed and wrap it around the retriever's bars. It will float perfectly, keep the functional shape of the retriever, and you can slip off the foam if you need to search the bottom.
... Hope this helps.
Buy a retriever, and then pick up foam pipe insulators at Home Depot. They're kinda like those "noodles" you see kids using in swimming pools, but they come in smaller diameters with a slit down the side and a hollowed out center for the pipe. Cut it to the length needed and wrap it around the retriever's bars. It will float perfectly, keep the functional shape of the retriever, and you can slip off the foam if you need to search the bottom.
... Hope this helps.