A small boat that you wind up and will go forward in a pond or swimming pool

A list of things needed:

1. A square peice of wood
2. A thin square peice of wood
3. A thin rubberband
4. A saw

Step 1: The Main Part of the Boat

First you will need a peice of wood (preferably a square peice).
Cut it so it is an arrow shape. Then cut a box out of the bottom.
It helps if you make round cuts on either side of the box so the water is pushed in a more water dynamic way.

Step 2: The Rotor Peice

The rotor peice is what propels the boat threw the water with the rubberband. Get a thin square peice of wood cut it so it fits inside of your square cutout on the boat. Drill two holes in the wood an equal length away from the sides so the rubberband can fit through.

Step 3: Finishing Up

Put the rubberband threw the two holes like a weave and wrap the rubberband around the two sides of your square cutout. To make it propel twist the rotor backwards so when you let go the rubberband will go the opposite way and propel the boat threw the water.