A friend of mine is a wooden boat builder and very talented wood worker. For his solo boat, he constructed a contraption that fits on the fore and aft deck with a pulley roller that he runs his anchor line through. Then attached a open CAM cleat that he can lock off the anchor with. He uses both the fore and aft so he can keep the canoe positioned the way he likes. It's pretty brilliant and I think he said he stole or improved on someone else's idea but the only thing he had to drill was the thwart for the cam cleat. The contraptions on the bow and stern stay put without tension and can be taken off when not used. I'll try to find pics.