dang you guys are awesome...funny thing is ive lived in/near two of the suggestions.
im originally from Minnesota, so i could probably figure that one out.
i also lived on Lake Barkley when that particualr seaplane went under. the story is kinda freaky, but i dunno how much of it holds water (no pun intended)...apparently a guy brought his wife and kid(s) out to the lake and had purchased a sight seeing flight just for giggles. well, she wanted nothing to do with it and begged him not to put their family in "that thing", for whatever reasons she felt unsafe. well he took her aside and somehow convinced her to go for just a short pass around the loop to see what it was like. long story short, i think one of the floats seperated, or hit a log and disinigrated or something...anyways the plane flipped over (take-off or landing, i dont recall) and the only survivor was the wife...can you imagine?!?
anyways, thanks for the ideas, if ya conme up with anymore, throw em out!