Born fromthe Storm.
Two legendary teams. Four decades of boardsport expertise. The story of how a maritime warning signal became the standard of a new era in foiling.
"We don't wait for the perfect conditions. We raise the flag and ride."
The storm warning flag is hoisted when forces reach their most powerful. Sailors seek harbour. Surfers wait. Foilers launch. We are built for the moments others avoid — and our icon says exactly that.
The PeopleBehind the Flag.
Every club needs its characters. Ours happen to have decades of ocean experience between them, an unhealthy obsession with foiling, and a collective inability to stay onshore when conditions turn interesting.
TA
A lifetime of sailing distilled into foil adventure programmes. Tom has navigated the world's toughest coastal waters and brings that hard-won wisdom to every session.
MS
Boardsports industry veteran since 1984. Four decades at the forefront of surf, snowboard, wing and foil. The institutional memory of Slack Tide.
LS
Youthful energy meets technical precision. Luke brings the next generation's fearlessness to the waterman lifestyle and a coach's eye for rider progression.
PS
Co-founder of Foil Ride in North Wales. Phil's sailing heritage and deep knowledge of tide and wind patterns make him the navigator every foil adventure needs.
The Flag thatWarned the World.
Long before hydrofoils existed, mariners across the world communicated with flags. When conditions became extreme — when the ocean turned from opportunity into threat — harbour masters raised a single, unmistakable signal: a red square with a black square at its heart.
The Storm Warning Flag. Wind forces of 48–63 knots. Seas running 20 feet or higher. A signal that divided sailors into two groups: those who turned back, and those who pressed on.
We chose it as our icon because we believe foiling lives in that same moment — that precise intersection of power, skill and calculated risk where the ocean offers something extraordinary to those prepared to take it.
Force
48 – 63 knots sustained wind
International Maritime Use
Red Field · Black Centre Square
Two Coasts. One Club.
Slack Tide Foil Club was forged from the partnership of two of British boardsports' most seasoned forces. The founders of Foil Ride in North Wales — Tom and Phil, whose lifetime of sailing experience has taken them across the globe's most demanding waters — joined forces with the father-and-son team of Mark and Luke Selvey, based in Woolacombe, North Devon.
The result is two world-class foiling locations, two generations of knowledge, and a single shared obsession: giving riders access to water experiences that most people only dream about.
Where LegendsMeet Youth.
Mark Selvey has been at the leading edge of the boardsports industry since 1984 — over four decades of industry-shaping experience across surf, kite, wing and foil disciplines. Luke brings youthful energy, technical precision and a new generation's fearlessness to the partnership.
Together with Tom and Phil's blue-water sailing heritage, the club represents something genuinely rare: institutional knowledge meeting lived experience at the cutting edge of the sport.
Building theFuture of Foiling.
Slack Tide Foil Club is not a surf shop with foils on the wall. It is a living, breathing foil programme. Premium gear, world-class coaching, and curated global adventures designed around the planet's finest foiling waters.
Aligned with Flitelab, Ozone, Apple Tree, Axis, we stock and ride only the equipment we genuinely believe in. Every lesson is taught by riders who've logged real ocean miles. Every adventure is led by a team that has crossed oceans before breakfast.
Our Standard.
Two Coasts.Infinite Possibility.
From the rugged tidal surges of the Bristol Channel to the world-class wind of North Wales — our bases give you access to some of the UK's most exciting foiling waters.
The WholeWorld is our Water.
The founding team's combined sailing experience spans decades and oceans. We are building luxury foiling programmes in some of the world's finest locations — from Polynesian lagoons to Scottish sea lochs. Guided by people who've actually been there. In real conditions.
Explore Adventures →Why We Flythe Storm Flag.
The maritime flag system has governed seafarers for over a century. Each flag in the progression means something precise — not a mood, not a brand feeling, but an exact set of conditions demanding a specific response.
The Storm Warning Flag occupies a very particular position in that system. Not the highest — hurricane warnings tower above it. Not the lowest — gale warnings precede it. It sits at exactly the point where ordinary becomes extraordinary.
"When the storm flag flies, most vessels seek shelter. The conditions are no longer advisory — they are a force to be reckoned with. That is the precise moment Slack Tide Foil Club was built for."
— Mark Selvey, Co-FounderThe red field signals danger acknowledged, not danger feared. The black square at its centre is the void — the unknown horizon, the open ocean, the blank page of a foil session when conditions reach their peak. We carry both in our icon because we are built from both: passion and precision, risk and respect.
Gear we actually ride.
Authorised Partners
Slack Tide
Flitelab
Ozone
Apple Tree
Axis
WIP
Ready to Raise the Flag?
Join the club. Get coached. Explore the world from the water.