We had a local fellow here in New Brunswick use the same thing to get his new TP52 into the St John river. Was quite the show wathcing him go through to see if it would make it. http://telegraphjournal.canadaeast.com/rss/article/726787
It's not all that an unusual occurance. That first boat though looked like he was on the ICW. Hope he doesn't mind doing that a lot.