I have heard that some, or maybe all, floatplane charter companies restrict canoes to 15 foot long if they are to be carried tied to the float struts. True? I am considering a new canoe and am looking for input on length. I am building a Smith Cub and hope to put it on floats and take my canoe (and dog, but I don't plan to strap him to the strut..... yet ) to the North Country. Those of you who have had canoes as external loads what are your thoughts on the type, size and weight of the canoe.