My 68lb w/c canoe has a traditionally-shaped centre thwart (i.e. wider in the middle). She has 3 simple thwarts rather than seats (like a birchbark), so can be paddled or carried in either direction, which is really handy (and pretty). So I am reluctant to switch out the centre thwart for a retro-fit yoke that would make the canoe permanently uni-directional. However, as I get older (66) and bonier, the wide part of the thwart is increasingly an aggravation to my neck vertebrae when I move the canoe short distances from car-top to water. For longer slogs I lash in the paddles and am rather happier, but I would not dare to leave paddles lashed in while the canoe is in transport on the car roof, so my short carry problem remains. I have tried making a carry bar to fit atop the centre thwart, modelled on a few scant photos of those used in Keewaydin and used with a tumpline. I guess I got the shape wrong because I couldn't prevent it slipping backwards off my shoulders, dumping all the load onto the tump at awkward moments. Subsequently I have tried a simple round 1½" stick sat over the gunwales and lashed to the thwart by the tumpline. This was better (and looked great!) but still niggled my C7 and had no 'give' whatsoever. If you have a 'primitive' carry bar system that doesn't involve altering the canoe, doesn't involve metalwork or pipe insulation or ugly blocks of padding, and is satisfactory in use, please would you post a picture? Thanks.