Step 3: Rudder
Scrap MDF pieces
One of the things we can experiment with is the placement of the rudder. Having a long oil absorbing tail makes it difficult to steer with a rudder placed at the back of the boat. To get going we will give some instruction on how to make the rudder, you can place the rudder anywhere along the PVC hull.
Cut down a piece of the hollow aluminum tube, sand the edges. Mark the PVC hull where you would like the rudder to go. Drill in the hull with a slightly smaller drill bit and force fit the aluminum tube in with a hammer. Use PVC glue to completely water proof the hull.
The rudder is made out of MDF wood, sand the edges down, drill a hole from above to glue a wooden rod in it that fits the previous aluminum tube.
We attached another piece of MDF at the other end of the rudder, this wind vane will act as the automatic auto-pilot. The boat will react if the wind direction changes. This means that we don't need any electronics for now, but are limited to the control we have.