Ironman Cozumel

I haven't but a friend did it in 2012, he said it was important to mindful of the current on the swim.  There's a vid of some poor soul getting stuck in it and not making any headway whatsoever.  Finally got pulled.   Maybe see if you can find some race reports that mention the current.  He said something about staying out a bit or something but don't quote me on that.