Fish surfboards are a common type of custom shape. They vary tremendously in shape, style and performance, which is why they lend themselves well to surfboard shapers. You can basically get a fish surfboard to cover most conditions of wave, as always though, speed and manouverability will come at the cost of buoyancy and therefore, stability. The video below is a great introductory video about the variations of fish surfboards, if that is what you are looking for. So it should give you something to think about, before you speak to your Gold Coast surfboard shaper. It is often a better idea to do some surfboard research like this so you know what you are looking for and therefore, you can be more specific and direct with your information.