Ah......Dan, I'm having a mental vision of gangs of egyptian laborers pulling those huge blocks of stone to the pyramids. There may well be a way to attach a yoke but who would you find to put under it?
Seriously, as we age we really need to be careful not to damage ourselves (spine, joints etc.) and trying to carry such a load looks like a recipe for disaster. I think the best plan would be to get some kind of cart made for boats and use that. I'd be sure to pick a sturdy one at that!
Maybe what might help would be if you could look at several canoe manufacturer web sites and see what canoes for camping now look like?
Best Wishes, Rob