Can't find my material

Hi, If anyone goes to youtube and searches up Kayak Wind Paddle they will find out just what design I am talking about here. I need a very flexible pole so I can make a sail for my kayak that can compact into a small double circle (720 degrees). I want it made of a one piece pole that is at least 8 foot total length or up to 10 foot total length. My issue is, I cannot find a place for the average consumer to buy that stuff, be it fiberglass, carbon fiber, or plastic (I really don't care one way or another so long as it doesn't rust or break real easy). It doesn't seem like this should be a hard material to find, nor should one pole even be very expensive at all. If anyone knows of a site, or store I can find what I need at, please help me out here. I have searched for a day and a half for the stuff now and all i am pulling up is manufacturers that only sell to companies. (seriously annoying.) The ones on Amazon are super overpriced and the shipping makes them really bad. (Not willing to pay more than $6 USDA.