Scupper

What Are Scupper Plugs and Why Do You Need Them?

If you own a sit-on-top kayak, you've almost certainly noticed the holes molded into the hull — those are scupper holes, and they're there by design. Scupper holes are intentional openings in sit-on-top kayaks that serve a couple of important purposes: they help give structural integrity to the hull and operate as drain holes when water enters the boat. While this self-bailing feature is a genuine safety advantage in rough water, it comes with a trade-off: while the scupper holes are designed to allow water to drain from the deck, they can also allow water to come onto the deck from below.

That's exactly where scupper plugs come in. Scupper plugs are specialized rubber or silicone stoppers designed to seal your kayak's scupper holes when needed. These simple devices control water flow through the drainage holes in your kayak's hull, giving you the flexibility to stay dry in calm conditions or allow rapid drainage when needed.

When Should You Use Scupper Plugs?

The decision to plug or unplug your scupper holes depends largely on where and how you're paddling. A scupper plug will increase buoyancy and allow your kayak to ride a bit higher in the water, making for a more comfortable ride on flat water. They are not strictly required but are especially recommended in colder conditions or if the kayak is being weighed down with a heavy load. On the flip side, in choppy open water or rapids, it's wise to remove the plugs and let the self-bailing system do its job — if you plug your scupper holes, water is prevented from coming up through the holes, but it's also prevented from draining back out.

Anglers who spend long days on the water will also appreciate scupper plugs for another reason beyond comfort: scupper holes allow water, creatures, and debris to get into the kayak, and if you paddle through chop, the splash under the hull will allow water in along with everything that's in it. Keeping plugs handy on calmer fishing days helps maintain a clean, dry cockpit for your gear.

What to Look for When Choosing Scupper Plugs

Not all scupper holes are the same size, so fit matters. The most common scupper plugs are made from rubber or silicone and feature a tapered or conical shape that allows them to fit snugly into holes of various sizes, with the hollow design compressing slightly when inserted to create a tight seal. More advanced options include self-draining designs: self-draining scupper plugs, also called one-way scupper plugs, allow water to flow out of your kayak while preventing water from entering from below. For convenience, many standard plugs include a loop pull or ring pull design that makes removal quick and easy — an essential feature when you need to drain water rapidly or remove plugs in an emergency.

Top Brands in Scupper Plugs

When it comes to reliable, well-fitting scupper plugs, YakGear is a go-to name among kayak paddlers and anglers alike. YakGear's Universal Scupper Plug Kit is designed to solve the common problem of unknown sizes when replacing lost scupper plugs. The kit provides a set of plugs that fit scupper holes ranging from .75" to 1.5", giving paddlers a versatile range of options to seal those self-bailing holes. That kind of universal compatibility makes YakGear scupper plugs a smart choice whether you're upgrading your existing setup or replacing a lost set mid-season.