On top of the Cutler Marsh, west of Logan there is a place called the Bud Phelps. There is a stoplight on 10th west by Woodruff elementary school. Take that road west, until you see the signs. It gets hit fairly hard, but what public area doesn't? If you have a duck boat, the marsh can be good at times. There are a few different boat ramps, one on what is called the Valley View Highway, another at the Benson Marina, another just north of Cache Junction, and I believe there is one more in Benson, by the Benson LDS Church house. That one will put you onto the Bear River proper and you would have to wind your way down to the "big" water. If you are hoofing it, plan on doing a bit of walking to get to an out-of-the-way place.
Look me up next year, I maybe we could get together for a hunt or two. I'm an old fart though, so you would have to put up with that!