Find a new favourite or learn more about your old reliable.
Flex fins are as you'd imagine; more flexible. They begin with a strong base and flow outward into a thinner nose and narrow tip - offering more flex than a traditional longboard fin. The additional flex makes the board feel looser and adds sensitivity in the water, giving you more liveliness.
There isn't a whole lot of surface area on a flex fin, meaning your longboard will have a lot more freedom to move and turn in the water. This also allows for more aggressive cutbacks and carves.
To put it simply, the pivot fin was made for noseriding. Featuring a wide tail and wide nose, pivot fins offer plenty of stability. Being further down in the water allows them to maintain a steady hold on the tail end of your board, as your weight transitions to the nose.
Due to its upright stance and long length, it also allows the surfer to pivot the board for quick direction changes and locks into the right noseride section in the wave.
Named after their resemblance of the sharpened head of an ax, the hatchet fin is essentially a nice way to meet in the middle between a D fin and a pivot fin. They're really wide at the end of the fin, just like a D fin, for optimal hold down the line and for easy trimming. But hatchet fins are also a lot longer than a D fin, and the extra length in the water allows them to help the tail stay better locked in when you walk to the nose.
This will keep you really steady through your entire cross step and your noseride while allowing for direction changes to be made from the tail.
If you are looking for a fin shape built based on versatility, then an all-around fin should have your surfing covered for the whole year.
They are nice and wide throughout the base and up to the nose of the fin granting the longboard hold and stability, especially when noseriding and trimming. But all around fins are also just thin enough and flexible enough so that when it's time for a nice swooping carve you can easily adjust your movements, as they also allow for some really solid performance and drive.
You can use an all-around fin as a single fin or with side bites to spice up the turning action of these fins, and if you aren't sure of your surfing style or if you like to do it all, this type of longboard fin will be perfect for you.
This one is old school! We've all seen one of those black and white photos - that classic 1960s beach shot with a group of longboards leaned up against a dune with a massive single fin glassed on. Those were all D Fins!
Not the most versatile fin out there - the D fin is a bit tougher to turn than all of the above due to the extremely wide base, and not quite as stable as a pivot fin when your on the nose (since it is not so tall). These fins are designed for getting maximum trim and surfing straight down the line. Want to get back to the roots of surfing - toss one of these bad boys on your log and just enjoy the ride.