I highly recommend this carrier for anyone looking for sturdiness, ease of use, and particularly if you have to move your boat and gear by yourself. When I use this I'm looked at with envy while others try to muscle their boats from car to shore or vice versa.
Once centered, my boat rides along at slightly below waist level. It's like taking the canoe out for a walk.
The only disadvantage is the weight. At 17 lbs there are lighter portage carts available. But none are so easy to use and so well made.
I have also seen similar designs that were called the "Canadian Canoe Walker".