If you want to mount this flush on a deck, you can drill a hole the size of the antenna collar and pass it through and tighten the nut. There is a gasket included. If you want to use the Peplink Antenna Mount for Peplink Mobility Antennas this allows the Mobility antenna to be mated with any standard 1" 14TPI marine mount including the Peplink Antenna Base Mount. Note though that with the 7 wires with the Mobility 42G, this will not work but it will work with the 5 wires with the 40G. If you use the base mount then you need to drill a hole to pass through the deck. There are other options for passing cables out the side such as using the Morad M93. Feel free to call us and we can discuss the various options.