Fixed scaling of wakes (note issues with velocity data)

- Official stream provides speeds of 0 kn
- Mock provides speeds that do not correlate with motion

#story[782]

visualiser/src/main/java/seng302/Model/Boat.java

@@ -28,7 +28,7 @@ public class Boat {
     protected StringProperty position;
     protected boolean started = false;
     protected boolean dnf = false;
-    private double wakeScale = 1 / 50;
+    private double wakeScale = 3;
     private int sourceID;