This is probably going to be the achievement that will give you the most fits. You start in a skiff and have to race from checkpoint buoy to checkpoint buoy; time is added as you pass each one. In order to get gold you'll have to beat the different missions with a certain amount of time remaining. What makes this so rough is that the skiff controls like a drunken bantha. Also try to avoid the ramps as they slow you down and there are several that cause a weird bug where your ship will nose dive into the water and become a slow submarine.