Drill Paddle Power Prop for Watersnake, Tracer, Motorguide

The propeller came but there was no shaft included, Used a dowel rod to connect the prop to the drill. It works, it propelled my kayak very nicely until the dowel rod broke 45 minutes later and the prop sank like a rock. If you don't include a shaft with your product what's the point of selling it? Not everyone has a metal prop shaft laying around.