How to Seal a Transom Mount on a Fishfinder

Fishfinders are electronic devices that use echolocation, which is a form of sonar, to locate fish and underwater obstacles like logs. Fishfinders typically only have several components -- a monitor screen, power and transducer cables and the mounting bracket that the monitor fits into. The monitor mounting bracket can be mounted anywhere, but one common mounting area is on the transom. Even once the mounting bracket is installed, the monitor can sometimes be jarred loose. Sealing the monitor inside the bracket so it does not slip can be accomplished with Velcro which is a better alternative to glues or adhesives, because the monitor can still be removed easily if need be for repairs. The mounting bracket itself can be removed and glued into place.

Things You'll Need

  • Screwdriver
  • Marine sealant or epoxy
  • Scissors
  • Velcro strips
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Instructions

    • 1

      Disconnect the cables from your fishfinder and remove the monitor from the mounting bracket.

    • 2

      Use a screwdriver to remove the screws holding the fishfinder mounting brackets from the transom. Remove the mounting brackets.

    • 3

      Clean the mounting area on the transom thoroughly with a warm, wet rag and then allow the area to dry.

    • 4

      Apply a small amount of marine sealant or epoxy to the inside of the fishfinder mounting brackets and then position the brackets back over the transom. Replace the screws with a screwdriver.

    • 5

      Cut two matching Velcro strips to size to fit on the inside of the fishfinder mounting bracket and to the back of the monitor. Peel the backing off the Velcro strips and attach one to the inside of the mounting bracket and another to the back of the monitor.

    • 6

      Slide the monitor back into place, making sure the Velcro strips attach to each other, and reattach the power and transducer cables.