These little doo-dads are great! They’re smaller and cheaper than the adhesive-backed alternative. The down-side, of course, is that you have to supply the adhesive, and you have to let that cure before you can use them.

The Weld-Mount people want you to use their epoxy, and I would guess that it probably works fine. I wouldn’t know, though, because I still have about half a tube of BoatLife Life Calk polysulfide to use up. So I used that, and it appears to be holding well. It’s only been a couple of weeks, though…I’ll report back if and when they fail!

As usual, I picked these up at Fisheries Supply. Here’s the cable from my new VHF antenna entering through the cabin top. It’s attached to the Weld-Mount wire-tie anchor with a plain old "zip-tie".

No, there’s no sealant on the inside of this hole. You don’t seal the inside, because if water gets through whatever gasket/sealant you used on the outside, you want to SEE that water in the boat. You don’t want it to soak into the fiberglass for a few years before you discover that the outer seal has failed. I learned that from Navagear Publisher Aaron.