We’ve got some poorly lit areas aboard (as you can see above), and they’re where we most need bright light: our under-the-bridgedeck galley sink and our chart table. Early on, we’d use a flashlight to clean the dishes or navigate. Reticent to drill holes in the overhead surfaces, I cleverly hot-glued some large washers to these surfaces and stuck magnetic puck-style lights to them. The light was good, but the lights were easily knocked off, usually into the dish water. I tried a bunch of Velcro-based solutions, but these never lasted long. I think I’ve finally come up with a solution I’ll be happy with for a long time.
It seems all the hardware stores are selling cheap, wall switch-style LED light fixtures that emit an astonishing amount of light. They use 4 AAA batteries for power and can be affixed using magnets, Velcro, or two screws into captive slots. I was done with the first two approaches, and I knew that screws would be really stable, but how could I mount it that way without making holes overhead?
From a piece of scrap Plexiglas, I cut several plates about the size of the base of wall-switch lights. Then I used a wall-switch light as a template for screw placement and marked the plates before drilling and tapping for the appropriate screws. (By appropriate, I mean screws that are just long enough to penetrate the thickness of the Plexiglas, but then leaving only enough of a gap beneath the screw head to later slide on the fixture so that it’s snug.) Before turning the screws into the plates, I applied some glue inside the holes to increase the holding strength. Next, I wiped down the overhead with acetone, exactly where I wanted to mount a light. In the same spots, I used hot glue to attach the plates to the overhead.
After installing the batteries and sliding the lights into place, all that was left to do was flick the switch.