Gigmaster,
I'm from Niagara Falls and your comment "You visit Niagra Falls and think " This might be runnable...." "
made me remember this Jesse Sharpe character. Read about it here:
http://www.nfpl.library.on.ca/nfplin...p?id=91010&b=1
There's other photo's of him going over on that same site. Next to Subject, under Niagara Falls-Horseshoe Falls, Portraits-Biographical, click on Scow. on that page you'll see the succesive photos of him going over. Gives ya the chills.
One time there was another guy that tried doing it on a jet ski. If I remember correctly, his plan was once he was clear of the precipice, to pull a parachute and float (free of the jet ski) to the lower river. He fared the same as Mr. Sharpe.
Tom.