How to Repair Leaky Decoys

Return your leaky decoys back to service
Story at a Glance
  • Holes are easy to repair, and repairs done properly will hold indefinitely.
  • The best patching material is a styrene-based silicone sealant named Lexel.
  • Make major repairs, like replacing a broken bill or filling a large hole in the decoy, with a two-part epoxy putty such as Sonic Weld.
  • There’s a certain satisfaction in shooting over decoys that you’ve restored to “good health.”

The sight was one to make any duck hunter sad.

A motley collection of decoys was piled behind a barn where my friend stored his duck hunting paraphernalia. Grass had grown high around them. The sun had bleached their colors. They were made for water and good sport, but now they were languishing in the reject heap.

“Those are my leakers,” my buddy explained when I asked him about the decoys. “Most have shot holes in them. A few have broken seams. When a decoy starts taking on water, I pull it out of my spread and bring it home to be patched, but it seems like I just never get around to this chore. So they just pile up.”

Virtually every hunter has these “low riders” from time to time. Most duck hunters use hollow-body decoys that are injection-molded from various thermoplastic resins. These decoys offer natural detail, light weight and excellent durability. However, they are vulnerable to puncture holes from misdirected shot or to cracks in seams or decoy bodies. It doesn’t take long for a small leak to cause a decoy to morph into a submarine. 

But the good news is that these puncture holes are easy to repair, and repairs done properly will hold indefinitely. Here’s how to fix leaky decoys, so they can be returned to service when the spread is deployed the following season. 

First, locate the leak(s) while the decoy still has water in it. Squeeze the decoy and rotate it, looking for streams, drips or bubbles of water forced out under pressure from leak holes. Mark each hole for repair.

Next, drill out each leak hole with a 1/8-inch drill bit. Drill through the wall of the decoy precisely on top of the leak. This is done to enlarge leak holes, so silicone patching material can be squeezed inside the decoy to form stronger patches.

After all leaks are found and drilled, drill another hole in the very tip of the decoy’s tail. Then set the decoy in a rack with the tail pointed down to drain remaining water.  Leave the decoy in the rack for an extended time period to remove all water and allow the decoy to dry inside. 

The best patching material is a styrene-based silicone sealant named Lexel. This sealant accepts paint better than other silicone sealants.

Apply Lexel to holes/cracks in decoys with a standard caulking gun (the kind that has a trigger latch that releases pressure immediately when the trigger is relaxed). Press the cartridge tip firmly against each drilled-out hole and apply Lexel, forcing some inside the decoy body to make an interior plug. Then use moistened fingertips to spread Lexel around the outside of the hole, smoothing it into a slight mound that completely covers the hole and tapers out onto the decoy’s outer surface.

Repair all drilled-out holes like this. Then set the decoy aside (out of the sun) for three days before painting, so the Lexel can harden.

Once the plugs have set, recheck the decoy for leaks that may have been missed.  Do this by holding the decoy with the bottom toward your stomach, fingers on its back and thumbs on its bottom surface. Squeeze firmly. If resistance cannot be felt against the thumbs, a leak still exists. You can detect small leaks by squeezing and listening carefully or by feeling escaping air on your cheek. 

Repair cracks and splits in a similar manner, except these require more drilling and filling, because the leaks are larger. First, drill holes at both ends of a crack or split. Then drill holes along both sides of the crack or split at 1-inch intervals and ¼-1/2 inch from the break. Next, after allowing the decoy to drain and dry, apply Lexel liberally into and over each hole. Then fill the crack or split with Lexel. Again, use moistened fingertips to connect and smooth all applications of Lexel into one broad patch, then set the decoy aside, so the sealant can harden.

Make major repairs, like replacing a broken bill or filling a large hole in the decoy, with a two-part epoxy putty such as Sonic Weld. (Make sure to use epoxy putty, not liquid epoxy.)  Epoxy putty easily mixes and mashes out like pie crust to cover holes or serve as a bonding agent for broken-off parts.

If a decoy is leaking, but you can’t find the holes, take a close look at the plug in the injection-molding hole. This hole is usually beneath the decoy’s tail. Sometimes slow leaks develop around this hole. Daubing Lexel around the molding hole is a simple way to repair such leaks.

Once all leaks are repaired and the Lexel patches have hardened, it’s time to touch up or repaint the decoys. One option to full repainting, which is a time-consuming process, is to paint repaired decoys flat black or flat brown. These decoys certainly aren’t natural-looking, but they mix in well with decoys with regular paint jobs. Many veteran hunters prefer to have several all-black decoys mixed into their spread to enhance visibility to ducks at a long range.

There’s a certain satisfaction in shooting over decoys that you’ve restored to “good health.” Their usefulness continues, their value is retained, and their role in the grand sport of waterfowling carries on.