If that isn't enough, Jim Dreyer plans to haul dinghies filled with 2,000 pounds of bricks.
The 49-year-old has made direct crossings of each of the five Great Lakes.
He plans to begin his latest swim Monday from a spot near Algonac. It'll end Tuesday at Detroit's Belle Isle.
He's doing it without a support boat.
One of the dinghies is equipped with a radar target so Dreyer will show up on radar screens. He has to feed himself and won't leave the water until coming ashore in Detroit.
Dreyer is trying to raise money and awareness for Habitat for Humanity.
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