I thought about doing it like this, but I drove a couple pilings in once, 8-10" thick hard maple poles driven in about six feet. As the ice moved around at ice out they were both pulled from a 90 to nearly 45 degrees. Please post your ice out results. Perhaps the metal poles will warm enough to prevent that. Be a whole lot easier than getting them up in the trees as I currently plan to do, mostly due to the difficulty of preventing predators.
