Just completed my first batch of the final version of my kayak carriers. They work great and come in their own sack that can be beanered to the back of your kayak, so you never even know it's there until that time when you have to hike out or in.
I call it "The Craw"... it works great, folds up to about 7 inches by 3 inches, and has padded shoulder straps for comfort. Not sure exactly what it weighs, but I am sure it's much less than a pound.
The great thing about them is that they are only 45$
Soooo, whether you are enjoying that walk out of Waterton, or out of the painful Upper Taos Box... The Craw will be a much better option than the shoulder any day.
If you have any questions, feel free to contact me at email@example.com