Airplanes deploy revers thrusters when landing which are basically just shaped metal shields that move into place behind the engines to provide reverse thrust and slow the plane.

But adding a fan on a sailboat is seen as stupid and doesn't work.

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[–] [S] 1 point 1 week ago

You need a magnet thrust reverser

Put another magnet on the front of the truck and the magnets reverse thrust one another for maximum results

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