To lock up a paddle board, fit a lock to one of its strong points (the leash plug or the fin box) and run a steel cable from it around something that can’t move, like a post, a dock rail or your roof rack. On a car, use lockable tie-down straps with steel cable inside, or a rack with built-in locks.
No board lock will stop a thief with bolt cutters and time. What a lock does is stop the quick grab, which is how most boards go missing.
Quick answer
- At the beach, dock or a café: a leash-plug or fin-box lock plus a cable, looped around something solid.
- On the car roof: lockable straps (like KanuLock) or a locking SUP rack (like the Thule SUP Taxi).
- Inflatable board: deflate it and lock it in the car or take it with you. It’s the most secure option there is.
- At home: store it indoors or in a locked garage or shed. See how to store a paddle board.
Where to attach a lock on a paddle board
Most hard boards have two strong anchor points:
- The leash plug, the small cup at the tail that your leash attaches to. It’s bonded into the board to take the pull of a leash.
- The fin box, the slot under the tail that holds the center fin.
Lock makers design around these two points because, as Wikipedia’s surfboard lock entry notes, locks generally attach to the leash plug or fin box. Not every board has both, so check yours before you buy.
The carry handle is a poor anchor. On an inflatable it’s glued-on PVC and can be cut in seconds.
Locks for docks, posts and racks
DocksLocks SUP & Surf Security System
DocksLocks makes a clamp (the “Jaws”) that closes around your leash plug, plus a cleat that slides into your fin box for boards where the leash plug won’t work. You run the included coiled cable through it and around whatever you’re locking to.
It suits hard-board owners who want one system that works on most boards and also locks the paddle (with the Deluxe kit).
| Attaches to | Leash plug (Jaws) or fin box (cleat) |
| Cable | 10 ft coiled cable with resettable combination lock |
| Price | Around $53 for the complete system at the time of writing; the Jaws alone is around $33 |
Pros
- Works with either the leash plug or the fin box
- Cable is long enough for posts, racks and trees
- Light enough to carry in a bag
Cons
- A determined thief could cut the cable or damage the board to get it off
- The Jaws clamp takes some practice to fit
Fin Box Lock
This is a simpler option: two metal plates that slide into the fin box from each side and line up, with a keyed lock that holds them together. You then run your own cable or chain through the hole.
It suits paddlers who already own a bike cable and want the smallest, cheapest add-on.
| Attaches to | Standard US-style fin box |
| Lock | Keyed lock built in |
| Cable | Not included |
| Price | Around $17 at the time of writing |
Pros
- Small and cheap
- Fits in a pocket or PFD
Cons
- No use on boards without a standard fin box (many inflatables)
- You need your own cable
Locking a paddle board to your car
If you stop for food on the way home, the board on your roof is the easiest thing to steal. Ordinary cam straps can be undone or cut in seconds.
KanuLock lockable tie-down straps
KanuLock straps (now sold by FCS) look like normal tie-downs, but each strap has braided stainless steel cable inside the webbing and a keyed lock in the buckle. Once locked, the strap can’t be loosened, and cutting it means getting through steel.
They suit anyone with roof bars who carries boards, kayaks or surfboards and wants one set of straps for everything.
| Length | 18 ft per strap, pair included |
| Security | Dual 2.5 mm stainless steel cables inside the webbing, key lock |
| Fits | 1 wide SUP or 2 narrow SUPs, per FCS |
| Price | Around $124 for the pair at the time of writing |
Pros
- Also secure the board while you drive
- Work on most factory and aftermarket roof racks
- Fold away small
Cons
- Lose the key and you have a problem
- Pricier than plain straps
- Only as secure as the roof bars they’re wrapped around
Thule SUP Taxi
The Thule SUP Taxi is a padded carrier that bolts onto your roof bars and holds up to two boards. Its straps are steel-reinforced with a locking cam, and lock cylinders secure both the boards to the carrier and the carrier to your bars. The current version is the SUP Taxi XT.
It suits people who carry hard boards often and want loading and locking in one.
| Boards | Up to 2 |
| Board width | 28–34 in (per Thule for the XT) |
| Max load | 55 lb |
| Mounting | Tool-free, fits Thule and most factory and aftermarket crossbars |
| Price | Around $400 at the time of writing |
Pros
- Locks boards and carrier in one system
- Padded cradles protect the board
- Takes two boards
Cons
- Expensive
- Needs roof crossbars
- Too narrow for very wide fishing boards over 34 in
Locking up an inflatable paddle board
Inflatables have fewer good anchor points. Many have no leash plug in the usual sense (the leash attaches to a glued-on D-ring) and a fin box that won’t take a standard lock. A cable through a handle or D-ring is a deterrent at best, since PVC is easy to cut.
The better plan is the one inflatables were made for: deflate it, roll it up and lock it inside your car, or take it with you. If you’re leaving it inflated on the roof for a quick stop, lockable straps are the best of the outside options.
Tips for keeping your board safe
- Lock it to something that can’t be lifted. A cable around a post that the cable can slide off the top of isn’t locked.
- Keep it in view when you can, and don’t leave it on the roof overnight.
- Photograph the serial number and keep a receipt. It helps police and insurers if it’s stolen.
- Check your home or renters insurance. Some policies cover sports gear away from home.
- At home, store it out of sight in a locked garage or shed. Our best paddle board storage racks include wall racks that keep it off the floor.
FAQ
Can you lock a paddle board to a car without a roof rack?
Not securely. Soft racks that run straps through the car’s door frames can’t be locked in the same way. If you don’t have roof bars, an inflatable you can lock inside the car is the safer choice. Pickup owners can look at a tailgate rack.
Do paddle board locks damage the board?
Not when used as designed. Leash-plug and fin-box locks attach to parts built to take force. Don’t overtighten a fin box lock or force a clamp onto a leash plug it doesn’t fit.
Can I lock my paddle too?
Yes. DocksLocks sells a separate paddle lock (and a Deluxe kit that includes one) that goes on the same cable. A cable simply looped around a paddle shaft can slide off the end, so it needs a lock made for paddles.
Is a bike lock good enough for a paddle board?
A bike cable works well with a leash-plug or fin-box lock. Looping a bike lock through the handle alone is weak, especially on an inflatable.
