Anyone have an experience using a dolly for portaging a canoe for distances? I have a 17' Scanoe and a 2.2 Merc. on it and am hunting in the back of a bay. The bay is all gravel. The tide sometimes leaves me 100-150 yards from the water. Seems like a dolly with a set of mountain bike tires might be a good thing to use. At 57 I can still throw the thing up on my shoulders but with other gear being able to roll it along seems more practical.