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When to Use Kayak Scupper Plugs?

Published in Kayak Accessories 4 mins read

Kayak scupper plugs are primarily used to keep the inside of your kayak dry, though it's generally better to keep scupper holes unplugged as they are crucial for drainage and do not cause your kayak to sink.

Understanding Kayak Scupper Holes

Scupper holes are small, self-draining openings found in the footwells and sometimes storage areas of sit-on-top kayaks. Their primary function is to allow any water that enters the kayak, such as from waves, paddle drips, or rain, to drain out quickly and efficiently. This design ensures that the kayak remains buoyant and stable, even when wet.

While they are essential for drainage, scupper holes can sometimes allow a small amount of water to splash up into the kayak, especially in choppy conditions or when a paddler's weight causes the scupper holes to dip below the waterline. This is where scupper plugs come into play.

When to Use Scupper Plugs

Despite the general recommendation to leave scupper holes unplugged for optimal drainage, there are specific situations where using scupper plugs can enhance your paddling experience:

1. Staying Dry and Comfortable

  • Cold Weather Paddling: In cooler temperatures, staying dry is essential for comfort and safety. Plugging scupper holes can prevent cold water from splashing up, keeping you warmer.
  • Calm, Flat Water: If you're paddling on a very still lake, a calm river, or a sheltered bay where there's minimal chance of waves or spray entering the kayak, plugs can keep your feet and seat dry.
  • Preventing "Wet Butt" Syndrome: For paddlers who prefer to avoid sitting in a small pool of water that can accumulate from paddle drips or minimal splash-through, plugs offer a drier ride.

2. Specialized Activities

  • Kayak Fishing (Specific Conditions): While often left unplugged for drainage of fish slime and splash, some anglers might plug scuppers in very calm conditions to keep their gear and feet dry, especially if they aren't expecting to take on much water.
  • Photography or Leisure: If your primary goal is leisurely paddling and capturing photos without worrying about wet gear, plugs can be beneficial.

3. Transport and Storage

  • Transportation: When transporting your kayak on a roof rack or in a truck bed, plugging the scupper holes can prevent road grime, dust, or small debris from accumulating inside the kayak.
  • Storage: Storing your kayak with plugs in can help keep spiders, insects, or other small critters from nesting inside the scupper holes or the kayak itself. Ensure the kayak is completely dry before plugging for storage to prevent mold or mildew.

When to Avoid Using Scupper Plugs

It's generally advised to keep your scupper holes unplugged in scenarios where water is likely to enter the kayak, allowing the self-draining feature to work as intended.

  • Choppy Water or Surf: In rough conditions, waves, or when launching/landing through surf, your kayak will inevitably take on water. Leaving scupper holes unplugged ensures this water drains out immediately, preventing your kayak from becoming waterlogged and unstable.
  • Ocean Paddling: Ocean conditions are unpredictable. Even on a seemingly calm day, a rogue wave or boat wake can swamp your kayak. Scupper holes provide vital drainage.
  • When Launching/Landing: Water often enters the kayak during entry and exit. Unplugged scuppers allow this water to drain quickly.
  • Heavy Rain: If paddling in heavy rain, unplugged scuppers ensure rainwater doesn't accumulate inside.

Choosing the Right Scupper Plugs

Scupper plugs are widely available at local retailers and sporting goods stores. They come in various sizes and materials (like rubber or foam) to fit different kayak models. Always measure your kayak's scupper holes to ensure a snug fit that prevents leakage.

Scenario Use Plugs? Rationale
Calm, Flat Water ✅ Yes To stay dry and comfortable, minimal splash-back.
Cold Weather ✅ Yes Essential for warmth and safety to prevent cold water contact.
Choppy Water / Surf ❌ No Allows essential drainage to prevent waterlogging and maintain stability.
Heavy Rain ❌ No Facilitates rapid drainage of rainwater.
Transport / Storage ✅ Yes Keeps out road grime, debris, insects during transport and off-season storage.

For most recreational paddling, especially in variable conditions, leaving your scupper holes unplugged is the safest and most practical approach, as these holes are designed to prevent water accumulation and will not cause your kayak to sink.

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