Without one particular area, area MT, your life as a surfer would be nearly impossible because it codes for different directions of motion.
Attention affects memory. If you do not specifically attend to particular things, it’s as if you didn’t see them at all. So, to read waves better, attend to the details of the waves and how they move, and you will begin to see details that you haven’t noticed before (probably because you were too busy talking in the lineup and annoying everyone else).
Some people read waves better than others. Think Kelly Slater in the dying minutes of a heat or that dude who always seems to find the hole to poke through in your local heaving beachbreak. Some of this ability comes with experience of course, but without certain brain structures, none of us would be able to see what a wave is doing or update in real-time what it’s going to do next.