A couple friends and I once went to Niagara Falls over Xmas Break. AT the falls themselves, the fences and trees were completely covered in ice (built up from the mist from the water) approximately 6 cm. (~2 inches) thick. Suffice it to say, it was hella cold. Anyway, about 10m from shore, and 50m or so from the EDGE of the Horseshoe Falls (the half on the Canadian side), there was a dude, in those rubber wading pants, FISHING!!! He had his back to us, and the water was flowing from right to left (3 o'clock to 9 o'clock), and he was throwing his line at about 2 o'clock, letting it go with the flow of the water.
Suffice it to say we're completely amazed by the balls this guy had! I may (note, MAY) have a pic of the guy somewhere, but with the recent move it's gonna be hard to find. If I do find it I'll definitely upload it here.