SUP board fins: Key to navigation
SUP board fins are an essential part of your board. Think about it: just like a fish, without fins a stand up paddle board would have a hard time steering! Fins make the difference, so your board goes where you want it to rather than where wind, waves, or current might decide to take it. One fin, two fins, three fins, four might sound like a nursery rhyme, but it's really about the style of board that's best for you, and what you want to do with it.
Basically, the size of the board is relative to fin style and fin combinations.