The Half-Moon is built around a moon tail — the crescent shape that sits between a swallow and a round, with the wings opened up so the tail breaks loose at the top of a turn the way a fish does but holds through the bottom the way a round-pin would. The bottom runs single concave through the belly into a double concave behind the fins: speed through the middle, drive on the exit. Medium rocker keeps the board paddling cleanly and tracking on the open face. 60/40 down rails through the midsection feel forgiving at twin-fin speeds; the rail hardens through the last twelve inches to release water cleanly off the moon-tail wings.
WHAT IT WANTS
Clean waist-to-head surf with shape — beach break, point, or reef with some push. Twin fins want a face to drive off; dead-flat mush won't bring the shape alive. Punches above its weight at Lowers, Salt Creek, and the smaller-day Mentawais.
SKILL LEVEL
Intermediates and advanced surfers wanting twinzer hold with a moon-tail outline.
WHAT IT'S NOT
Not a flat-day groveler — for knee-high mush, a wider and flatter shape will paddle and plane better. Not a hollow-reef board either; when the surf gets big and heavy, a dedicated shortboard or step-up will give you more control.
BUILD DETAILS
Build overview — rocker profile, rail shapes, fin positions. Hover any zone for the per-section call-outs.
CONTOUR DIAGRAM
Half-Moon contour diagram coming soon. For the full hydrodynamic spec, message us and we’ll send the shaping sheet directly.
Message BlakeWHERE IT WORKS
The everyday twin in our scope: built for the surf SoCal hands you most months of the year, not the once-a-month dream session. Think a soft south at Lowers, an organized morning at San Onofre point, T-Street with shape, Salt Creek on a chest-high day. The Half-Moon paddles into peelers without grovel-board volume and draws clean lines through the open face. Push the tail and it releases; commit through a turn and the moon wings catch and hold. Travel use: mainland Mexico point surf (Saladita, La Ticla), Scorpion Bay, Baja peelers, Indo on a softer day.
WHO IT'S FOR
Intermediates comfortable on a twin who want a forgiving daily driver, and advanced surfers who want a twin that holds through a deeper bottom turn than a swallow-tail fish allows. Not a beginner board — without a center fin you're committing to twin-fin feel. Not a grovel board — when the surf goes flat, a wider, flatter retro fish will plane and paddle better. Not a step-up — when the surf is overhead and up, reach for a different shape.
THE DESIGN
A twin fin trades the all-conditions versatility of a thruster for speed off the bottom and looseness through turns. Wider plan-shapes than a shortboard at the same length pull the wide point forward, with a fast back third built around the fin cluster.
THE RAILS
Forgiving rail-to-rail feel with hard tail rails for clean release at speed. Mid-rails stay soft for trim hold; rail thickness flexes by length and rider intent.
Custom builds are tuned to your dims and surfing style. Talk to Blake about specifics.
FIN SETUP
Twinzer setup. Futures boxes. Two larger main twin fins plus two small canard fins ahead of the mains — four fins total, twinzer geometry. The canards add hold and drive without the full footprint of a thruster. Twin-only setup also available if you want the simpler config.
Need help picking templates? Read the fin guide, then start a conversation — Blake's happy to talk it through before you lock the build.
Recommended Fins
Twin fins live mid-rake to rake-leaning. Drive and looseness both want side fins to hold a long arc rather than pivot tight. Lean rake for fattier point break and longer carves; sit nearer mid-rake for punchier beach break. V4 Part B: 2 picks per brand spanning mid-rake (modern keel for punchier surf) and rake-leaning (classic keel for fattier walls).

JS Modern Keel
M-L· Performance GlassModern Keel / Mid-Rake
A modern keel template tuned for the JS twin-fin shapes. Drive and hold across long-line carves with a clean release off the top — the punchier-surf pick.
Shop FCS II →
Mayhem Twinzer
L· HoneycombTwinzer / Mid-Rake
Matt Biolos's twinzer cluster — the small canard outboard adds bite and projection to the modern twin without flattening the looseness.
Shop Futures →
Knost Twinzer
· HoneycombClassic Keel / Rake-Leaning
Alex Knost's twinzer — fuller-foiled keels with more rake than the Mayhem. The right pick for fattier walls where you want sustained drive and a longer arc.
Shop Futures →
TA Twin
· Solid FiberglassModern Twin / Mid-Rake
True Ames's house twin keel — hand-foiled solid fiberglass with classic mid-rake drive. The pure-feel twin pick for retro twin shapes that want trim character and a long arc.
Shop True Ames →
Furrow Twinzer
· Solid FiberglassTwinzer / Rake-Leaning
Hand-foiled fiberglass twinzer set — main keels paired with small canards for added projection. More drive than the TA Twin; a step closer to a full keel feel for fattier surf.
Shop True Ames →
Nautilus Twin
· ApexModern Twin / Mid-Rake
NVS's flagship twin. Hand-foiled fiberglass keel set with smooth mid-rake drive — runs as a glass-on (no box) for a pure-feel build.
Shop NVS →
Stu Kenson Twinzer
· ApexTwinzer / Rake-Leaning
Stu Kenson's collab — hand-foiled fiberglass twinzer with rake-leaning template tuned for held-rail drive on fattier walls. The drive-focused alt to the Nautilus.
Shop NVS →Not sure which fin template is right for you? Rake, area, flex, and construction all change how a board feels.
Read the Complete Fin Guide →RAKE SPECTRUM
Where each recommended fin sits between drawn-out rake (heavier arcs, more hold) and tight pivot (vertical release, modern shortboard turning). Mid-rake (neutral) is the balanced default.
Drawn-out arcs. Power, hold, drive through long-line turns.
Balanced — drive plus pivot release. The everyday HPSB default.
Tight, vertical release. Modern shortboard pivot off the top.
FCS IIJS Modern Keelmid-rake (neutral)
FuturesMayhem Twinzermid-rake (neutral)
FuturesKnost Twinzerrake-leaning
True AmesTA Twinmid-rake (neutral)
True AmesFurrow Twinzerrake-leaning
NVSNautilus Twinmid-rake (neutral)
NVSStu Kenson Twinzerrake-leaning
On a twin fin, the spectrum reads: rake = sustained drive and trim speed in fattier waves; mid-rake = the everyday pick that still releases off the top. Pivot-leaning twins exist but are rare.
WHAT TO PICK
Twin fins live mid-rake to rake-leaning. Drive and looseness both want the side fins to hold a long arc rather than pivot tight. Lean rake for fattier, drawn-out point break and longer carves; sit nearer mid-rake when you want a touch more release on punchy beach break. Per-fin picks for this model are coming — message Blake for current recommendations.
SPECS REFERENCE
Full Build Specifications
Stock dimensions, rocker, bottom contour, rail profile, fin positions, recommended fins by brand, and shaper notes for shapers and partner shops.
CONSTRUCTION & PRICING
Starting at $750 + tax
Every Half-Moon is built to order in San Clemente. Pick a finish tier below; customize further in the next section.
Clear Resin Sanded
4-6 weeks
Functional finish, fastest turnaround. PU blank, polyester resin, sanded off the lam.
Resin Tint Sanded
6-8 weeks
Color both sides of the board in the lam, then sand it smooth.
Tint Gloss + Polish
8-10 weeks
Top-tier finish. Resin tint plus a gloss coat polished to show-quality.
Foam + Resin options
Customize your build
AESTHETIC
STRUCTURAL
25% deposit today, balance due on completion. Timeline reflects current queue — confirmed on order.
Boards we've built
Recent customer builds — every Half-Moon dialed to the rider.
3332205DR — Grant Lewis (5'9 red deck)
3732313MH (5'10 Crazy Airspray)
GO DEEPER
Every construction call links to a full guide. Start with the essentials:
Board Details Checklist
Everything we need from you to begin your custom build.
Learn more →
Foam & Resin Types
Understanding the materials that make up your board's core and shell.
Learn more →
Fins — A Complete Guide
Single fins to thrusters, base systems, sizing by weight + wave, and how to pick across True Ames, NVS, Futures, and FCS.
Learn more →
Gloss + Polish vs Sanded Finish
The final touch that defines how your board looks and feels.
Learn more →
FREQUENTLY ASKED QUESTIONS
What size Half-Moon should I order for my weight and the surf I ride?
Pick the length and width that puts you in the 26–35L band for your weight and skill. The featured stock-dim band on the page is tuned to the everyday-twin window — that's where the moon tail does its best work. Sizes outside the band (smaller groms, heavier riders) are available via the All Sizes toggle. Between sizes? Size up in volume for softer surf, down for overhead with push.
Why a moon tail instead of a swallow or a round-pin?
A swallow releases water early — looser, more pivot, great for small-wave fish feel. A round-pin holds tighter through a deep bottom turn but feels less alive in mid-range surf. The moon tail sits between them on purpose: the wings open up enough to break loose at the top of a turn but catch enough to hold through the bottom. It's the middle-ground twin.
Can I order the Half-Moon as a thruster, quad, or twin-plus-trailer?
No. The Half-Moon is twin-only. The moon tail and bottom contour are tuned around two fins specifically — the way the wings release water and the way the double concave drives behind the fins both depend on the twin setup. A thruster, quad, or 2+1 conversion would fight the shape. If you want a quad, look at the shortboard models; if you want a twin+trailer, look at other Lundquist twins.
What kind of waves does the Half-Moon want?
Chest-to-shoulder shaped surf — the daily SoCal window. Soft south at Lowers, organized morning at San Onofre point, T-Street with shape, Salt Creek chest-high. Travel use: mainland Mexico point surf (Saladita, La Ticla), Scorpion Bay, Baja peelers, Indo on a softer day. Not a knee-high mush board, not a step-up for overhead-and-up — those days reach for a different shape.
Is the Half-Moon a beginner board?
Not really. Without a center fin you're committing to twin-fin feel — the board breaks loose differently than a thruster, and the moon tail rewards a rider who knows how to load the back foot. Intermediates comfortable on a twin will get along with it; advanced surfers who want a twin that holds through a deeper bottom turn than a swallow allows will too. Beginners are better on a wider, flatter board with a thruster or 2+1 setup.
How long does a custom Half-Moon take to build?
Turnaround depends on the finish:
- Clear resin sanded — 4–6 weeks
- Tint gloss + polish — 6–8 weeks
- Resin tint sanded — 8–10 weeks
Timeline reflects the current queue and is confirmed at order. A 25% deposit locks the build slot.
How does the Half-Moon compare to a CI Two Happy Twin or an Album Twinsman?
Same modern-twin family — single-into-double concave bottom, medium rocker, twin-only intent. The divergence is the tail: the Two Happy runs a squash, the Twinsman varies, and the Half-Moon commits to the moon shape specifically. The moon gives a slightly wider working volume range than a pin tail and slightly more hold than a swallow. Pick on tail preference more than on hydrodynamic feel.
Can I try a Half-Moon before ordering one?
Sometimes. We keep a small number of display boards in the shop in Carlsbad so you can hold one, check the moon-tail outline, see the finish. Message us to confirm what's currently available — stock rotates as boards sell. There are no in-stock Half-Moon boards right now (April 2026) but we'll flag when one lands.
MORE SHORTBOARDS
EXPLORE THE LINEUP
Innuendo
shortboard
Salt Burn
twin fin
Spectre
mid length
Fantasma
longboard
Scorpio
shortboard
Talisman (Mini Gun)
gun
Dutchman
glider
Rage
wake surf
2nd to None
shortboard
Suds
twin fin
Esplanade
mid length
Black Pearl
longboard
Talisman (Step Up)
shortboard
Talisman (Gun)
gun
Wake Surf #2
wake surf
Gumball
shortboard
Revenant
twin fin
Sea Bottom
shortboard
Lunada
longboard
Five Horizons
shortboard
Pin Twin
twin fin
Whip-Stitch
mid length
Big Joe
longboard
Wanted
shortboard
Duppy
twin fin
Serenata
mid length
Legacy
longboard
Gold
shortboard
Lucid
twin fin
Hiatus
mid length
Magic Carpet
longboard
Moon Shine
shortboard
Boomerang
twin fin
Apparition
shortboard
Half-Moon
twin fin
Bang!
shortboard
Aardvark
twin fin
Lasso
shortboard
Acid-Drop
twin fin
Popsicle Stick
shortboard
Big Buoy
shortboard
COMPLETE THE QUIVER
“Surf Everyday” means a board for every condition. Your Half-Moon covers chest-high to shoulder-high shaped surf— here's what rounds out the quiver.
Salt Burn
Salt Burn— Twin Fin
Sister twin fin in the Lundquist line — different rocker, foil, and outline character. See the Salt Burn page for the full breakdown.
Learn more →

Suds— Twin Fin
Sister twin fin in the Lundquist line — different rocker, foil, and outline character. See the Suds page for the full breakdown.
Learn more →

Revenant— Twin Fin
Sister twin fin in the Lundquist line — different rocker, foil, and outline character. See the Revenant page for the full breakdown.
Learn more →
Building a quiver around the Half-Moon? Start a conversation — we'll build the right boards for how and where you actually surf.
More boards live in the website catalog than at the shop. Visits are by appointment — text or call (949) 750-5067 to look at boards in person or start a custom build.
READY TO START?
Every Half-Moon is built to order in San Clemente — 4–6 weeks on clear-sanded, 6–8 weeks gloss and polish, 8–10 weeks tint-sanded. 25% deposit.
Shop: 106 W Mariposa Unit B, San Clemente, CA 92672
By appointment · 8am–8pm daily · (949) 750-5067

