Changing your longboard fin is the cheapest and most radical change you can make. The same board, with a different fin, enters the wave differently, holds the nose differently, and turns differently. Anyone who has been longboarding for a while has felt this. Beginners almost always find out too late, after spending on a new shape what they could have solved with a R$ 699.00 fin.
Quick summary
- The fin is the cheapest part of a longboard and the one that changes its behavior in the water the most.
- Five details define a fin: base, rake, depth, tip, and area. Each one solves a different thing.
- There are four historical single fin shapes: D-Fin, pivot, hatchet, and rake. The all-around is the fifth, and it is a modern mix of the others.
- The Lufi line is entirely focused on the nose: two hatchets (Singular 11" and NoZeppelin 11") and one wild card (Polyvalent 10.5"). There is no pure rake in the catalog, and that is a shaper's choice.
- The 2+1 is not a single fin with extra bits. It is a different way of surfing, and the center fin is still in charge.
- Twin is not a longboard setup. We have a Twin+1 set, but it is for mid-lengths and fishes.
Why the fin is so important for longboarding
On a shortboard, the conversation about fins revolves around how many: thruster, twin, quad. On a longboard, the conversation is different. The vast majority of classic shapes ride as a single fin, and it is within this world, of a single piece, that the differences appear.
A longboard fin works with much greater forces than a shortboard fin. A 9-foot board with 74 liters carrying a surfer standing on the nose needs a fin that holds the tail while the body is two meters away from the balance point. That is area, position, and shape. It is not a minor detail.
That is why a longboard shaper thinks about the fin along with the shape, not after it. If you are still deciding on the size of your board, it is worth reading how to measure a longboard, in feet and liters first: the right fin depends on what is underneath it.
The anatomy: the five details that define a fin
Before the shape, five measurements. They explain practically everything a fin does.
Base. It is the width of the fin where it fits into the box. A wide base creates drive: more surface area pushing, more sustained speed on the wall. A narrow base facilitates pivoting and has less drag. For a classic longboard, a wide base almost always.
Rake. It is how much the tip sweeps backward in relation to the base. The rake defines the radius of the turn: much rake, long and drawn-out turn; little rake, short turn and pivoting on the spot.
Depth (Height). It is how deep the fin goes. A deep fin holds more, resists sideslip, and allows you to walk to the nose without the tail sliding out. A shallow fin feels looser.
Tip. The tip is what decides between releasing and holding at the end of the turn. A narrow tip projects and releases quickly. A full tip holds and keeps speed controlled.
Area. It is the sum of everything, and it is the number that matters most for nose riding. More area underneath, more time you stay on the front without the board ejecting you.
The types of longboard single fins
There are four historical shapes. The fifth, the all-around, was not born as its own school: it was born from mixing the other four.
D-Fin: the soul surf classic
The name describes the design: a capital D. Wide base, rounded profile, generous tip. It is the fin for long trimming, smooth lines, and connecting with the wave without forcing anything.
The rounded outline distributes water resistance gradually, resulting in a wide and fluid turn. It is not a fin for quick pivots or hacks in the pocket. It is a fin for gliding, cross-stepping calmly, and feeling the wave under your feet.
Pivot: anchor for nose riding
Upright, wide base, and deep, with almost no rake. It seems simple, and the design is calculated: this fin exists to act as an anchor for the tail while you are up front.
When you walk to the nose, the weight is completely off the tail. The pivot holds the tail in place, prevents the board from sliding sideways, and maintains the line during a hang five or hang ten. It trades speed and fluidity for control on the nose, and it does so on purpose.
Hatchet: holds the nose and still has drive
The hatchet, which the English literature calls a hatchet, has a tip that widens and sweeps backward, like the blade of a hatchet. It is not a square ax head; it is curved.
This extra area up top is what holds the nose while the board is at speed, and the extended hook provides directional stability without killing the drive. It is the most recommended shape for those who live on the nose and do not want to give up moving forward on the wave.
Rake: long glide and speed
This is the most raked profile of the four. The tip sits several centimeters behind the rear edge of the base, creating a pronounced sweep angle.
The more rake, the longer and more drawn-out the turn. It delivers plenty of drive, maintains speed on the wall, and shines on waves with a long, consistent wall. In short or irregular waves, it is too much fin.
All-around: the wild card
A balanced fin that provides support on the nose but leaves the tail loose enough to turn. It works in any surf and on any classic longboard. It does not beat any of the others at what each does best, and that is exactly why it is usually the right fin for those who have only one board. When in doubt, go with this one.
How fin size changes everything
Within each shape, size is the second factor. On a longboard, center fins are typically between 8 and 11 inches.
| Size | What it delivers | For whom |
|---|---|---|
| 8" to 9" | Less area, less resistance, easy pivot | Progressive shape or 2+1 with active side fins. For classic, this tends to be too little fin |
| 9.5" to 10" | The balance range: stability for trimming without giving up turns | Most 9-foot longboards |
| 10.5" to 11" | Maximum area and maximum hold. The trade-off is a longer turn | Those who live on the nose, and boards 9'6" and up |
A practical starting point: one inch of fin for every foot of board. A 9'2" starts with a 9-inch fin and is adjusted from there, based on your weight and the waves you surf. The heavier the surfer and the bigger the board, the more fin is needed for hold.
The position in the box also changes things
A detail that makes a big difference: the same fin, moved a few centimeters in the box, changes the board's behavior.
Further forward. Looser tail, easier to turn, less grip.
Further back. More drive and security, better for noseriding. In exchange, you need to apply more pressure with your foot in turns.
Which fin goes with each Lufi longboard
Here is the part that almost no guide provides: which shape is each of our house fins. All three longboard fins cost R$ 699.00 and are made 100% of 6oz fiberglass.
Singular 11", hatchet. Extended hook and narrow tip. Great projection in nose maneuvers and quick turns when you ask for them. It is the fin for those who attack the wall without leaving the front. Available in blue, beige, green, and pink.
NoZeppelin 11", hatchet. Wide base, extended hook, and full tip. The full tip is the difference: it has enough flex to project in the turn and at the same time keeps the speed controlled on the nose. It is the hatchet that locks in the nose. Green.
Polyvalent 10.5", all-around. Designed to balance any 9'2" to 9'6" single fin longboard. Quick and tight turns with grip on the nose, solid in all wave conditions. Gunmetal gray, orange, and red.
Middy 8", center, R$ 399.00. A smaller version of the flow, with less volume in the back. Intentionally low flexibility, so as not to change the characteristics of your board. Fits mid-length single fins, and fits longboards when combined with side fins.
Notice what the entire line says: two hatchets and a wild card. There is no pure speed rake in the Lufi catalog, and that is a shaper's decision. The house DNA is nose, long lines, and slow surf. If your surfing style is different, it is honest to know that before buying.
They are all in the fin collection, with the quick-release screw for those who want to swap at the beach.
2+1 setup: when it makes sense
The 2+1 is a center fin with two smaller side fins. It is the most adjustable longboard setup because it changes behavior depending on how you distribute the area between the center and the side fins.
The logic is straightforward: the side fins provide grip when you press on the rail, and the center remains the main piece. What changes is how much the board responds to leaning.
Larger center, small and set-back side fins. The setup is close to a single fin. Preserved glide, smooth trimming, nose riding works well. This is the configuration for those who want 2+1 without losing the classic feeling.
Smaller center, larger and more forward side fins. The board becomes responsive in the tail, loses a bit of glide, and gains turns. This is the configuration for progressive or hybrid longboards, on days with wall and force. If you still don't know which of the two your shape is, the classic vs. progressive guide solves that first.
The Lufi 7" 2+1 set costs R$ 699.00 and comes with all three pieces, all in fiberglass:
| Piece | Depth | Base |
|---|---|---|
| Center | 7" | 5.48 |
| Side fins (2) | 4.56 | 4.56 |
The center has a slightly larger base and less rake, which is what delivers tight turns with control without losing stability on the nose.
And what about twin?
Short answer: twin is not a longboard setup.
Two fins loosen the board and speed it up, and this works on fishes and mid-lengths, where the board is short enough for the body to control the tail. On a 9-foot longboard, removing the center fin means giving up everything that supports nose riding, which is precisely what you are going to do on a board of this size.
We have a Twin+1 set for R$ 699.00, in 6oz fiberglass, with a single foil and a vertical design that generates speed. It is for mid-lengths and fishes. If your idea is to build a short quiver, it fits. If the idea is longboarding, the way is single fin or 2+1.
How to choose yours
Start with the question that matters: what do you want to do on the wave?
- You want to live on the nose. Hatchet or pivot, in the right size for your shape. In the house line, Singular 11" or NoZeppelin 11". And then it is worth reading how to walk to the nose of the board, because the fin helps but doesn't do it alone.
- You want long lines and trimming. D-Fin or rake, depending on the size of the wave you surf.
- You have only one board and surf everything. All-around. Polyvalent 10.5".
- You surf a progressive or hybrid shape. 2+1, and adjust the center fin based on the day's conditions.
Questions we hear every week
I am just starting now. Which one do I pick?
All-around, without thinking too much. The Polyvalent 10.5" solves 9 out of 10 situations and doesn't force you to decide what kind of surfer you will be before you even know.
Does a thruster work on a longboard?
Not the way to go. Thruster is a shortboard setup with three fins of similar size. What exists on a longboard is the 2+1, which looks like three but is not: there, the center is large and in charge, and the sides only help. Confusing the two is the most common mistake when buying.
Is a larger fin always more stable?
More stable, yes; easier, not always. Too much area for your weight makes the board sluggish and turns become an effort. The right one is the fin that holds your nose without killing your turning ability.
Do I need more than one?
Not to start. But those who have two usually have a hatchet for nose-riding days and an all-around for the rest, and it is one of the cheapest swaps that exists in surfing.
Can I try it out before?
Yes. Test-rides happen in Baleia, in São Sebastião, by appointment via WhatsApp.
If you're in doubt between two, just ask
The size comes from the board and your weight. The shape comes from your surfing. With your shape, your weight, and the spot you frequent, we can solve this in three messages on WhatsApp.
And if you want to see the options side-by-side first, everything is in the fin collection.
