The toughest part of evening surf shoots is you are generally shooting directly into a setting sun. To make matters worse you are basically shooting blind because checking your LCD after each shot is generally not a viable option unless you want to spend money on devices that allow you to better view your LCD. Speaking personally if I have any extra money to spend on camera goodies it goes into a fund that will allow me to eventually upgrade from the antique and extremely slow lenses that I currently have the displeasure to use. In most cases when shooting in these conditions I usually rely on past experience and hope for the best. The bonus side of shooting directly into the sun is you can end up with some amazing silhouettes, here are some examples.