Catamaran Wooden Gooseneck Plug Repair

prindle-wooden-gooseneck-plug-pinnedI have a small Prindle 16 foot catamaran (similar to a Hobie-Cat) that was built a year before I was born.  Naturally it needs repair from time to time, and after hooking the mast up improperly (resulting in a pretty spectacular failure), the boom’s gooseneck plug was broken.

I’m not sure if these are sold without the boom (possibly part of the “U” bracket on this catalog), but I wasn’t really thrilled about the riveted design anyway.  Instead of purchasing a new boom, I decided to make a boom plug myself.  Out of wood.  From a tree that I cut down in my backyard.  Check out the video and more pictures after the “read more” to see exactly how this was done.

I’m still obviously getting used to speaking on camera, but it seems like people like the narration and that “personal touch.”  When compared to some of my earlier videos shot with my 6 year old camera phone (see this post), things have really improved.  Thanks to everyone that subscribes to my Youtube channel, it’s really been growing tremendously!

If you missed it in the video, the plug is 2.1 inches in diameter, and the bolts are 10-24 socket head cap screws.  Button heads would have been even better, but I didn’t have any available.  I correctly guessed that the screw was a 3/8 inch diameter, but whether or not it was 16 threads per inch, I still am not sure.  Pretty basic design, but I’m quite proud of how it turned out, especially after a coat of eurethane/stain combo – this kind (Amazon).

As a side note, I’m not sure there’s a manlier way to make something, entirely pwning nature literally from the ground up.  I imagine it’s what Ron Swanson would do on one of the few sitcoms worth watching, Parks and Recreation.

For more catamaran repair, check out this article where I use an awl to repair my boat’s trampoline loops.  The loops have held up so far, we will see what happens with this repair.


  1. Just a couple of notes: 1/ If the wood expands by moisture, it will crack the boom. You will need to saturate the wood with preservative sealant first, then a drying time.(they used expanding wood to split boulders in the old days) 2/end grain fastening is not reliable with blind screwing. A plug should be placed slightly back in the wood just enough so all the screw thread passes through it. Use recorcinal glue to anchor the plug into the piece, only then form the plug for the boom.

    • Wow, have you actually done this before?

      It was an interesting experiment for me, but unfortunately it broke the first time I took it out. I think I understand what you’re saying about the plug – I don’t suppose you have a website or video that would illustrate this further?

      Thanks so much for the comment, it seems you might know a lot more about this than I do!