A grain company at Minneapolis had half a dozen loaded barges that it desperately needed to send down river to a destination a few hours away. Unfortunately, it was a small company and relied on independent power boat captains to move the barges, and none was available. The grain company did have its own deck hands. One of them, formerly a jet pilot, had an idea. The company had a small jet boat engine in its warehouse. It could be installed on one of the barges, add a rudder, and he could push two of the barges downstream. But that would leave three others tied up at the dock. Other capable deck hands then suggested that if each of the remaining barges was outfitted with a rudder, they could simply drift down river to the port, where the jet boat, having tied up its barges, would dock each one as it arrived. By staggering the departure times of the drifting barges it would all work perfectly. When told of the idea, the fretting company manager sighed with relief.
"That's it! Float some and jet some."