Start with a loop between the two "carry handles". Carabiner involved for snatching the anchor line. You can keep it out of your way by clipping the line itself onto something when not using it. That's about as simple as you can make to start with and then you'll either accept it as that or change it to suit you. You can add pulleys, maybe add different turning points other than your carry handles. Because you'll use chute cord or something suitably strong, start carrying an emergency line cutting device in case you might get caught up in it while inspecting the undereside of your yak some time while fishing.