I love my contoured yokes. When I first made a remove-able yoke for the Huron, I used the CVCC pads and they hurt like heck. I don't have any meat on my shoulders and they dug in like mad. The second one I made I used a Teal Contour yoke and adapted it for removing. We do use a Hooligan yoke pad and I have carried that boat many kilometres with minimal pain. Biggest boat we have carried with the contour yoke went 72 pounds, but we always break up longer ports anyway, maybe 500m at a time, drop the load and go for another, work through the longer ports that way.
We will demonstrate at Marshall Lake later this year. Christy and I will both take a load, I'll walk it through to the lake, supposedly a km, she will drop at the half way point. I go back and get that while she brings the rest. Usually though the boat goes through on the first pass. My Swift is only 40 pounds so not a big deal.