Lucky j
Explorer
I've been thinking about this some more. Does it really have to be any more complicated than a bar with some carpet wrapped around it? That's how our stationary canoe racks are done. As long as I try to keep dirt out of the carpet, I would think it would work fine?
I think taht with the carpet or the abs pipe over 1 of the bar should do the thing.
I have hully roller rear combo with sadle front for my kayaks, but I kind of need something like taht because of the shape of the hull and top, plus the rack on my YJ is more that7" high. If it wasn't for that, I would have keep it simple.
So if you simply protect that first bar (rear) with carpet or abs or else, you should be able to protect the top of you canoe. I realy don't think taht foam of any kind will support the robbing weight of the canoe. Specialy since you will be putting more weight on the rear bar will pushing the boat up and forward toward the front bar. My kayak have 15', 16' and 22'. I'm all able to place them on the jeep using the roller at the rear.
Good luck with your thinking.