We have mounted bases in several bass boats. Get the correct stainless, sheet metal type screws, and either mix up some epoxy or fiberglass resin to dab in the pilot holes and on the screws and they will be there for a good long time. I like the Tite-Lok holders. The base is small, and flat and they offer a rubber pad that can be put in the base when not using the holders. Makes a nice, neat installation.