[Electron]

You are correct on mounting the tripod. Try to get the screws that go through two of the feet of the tripod to go in to the rafters under the roof , makes for stronger mount of the tripod. Also can add a board on the under side of the roof and the screw will go through the roof and into the board , makes for stronger mounting. Most houses have prewire coaxes pulled to the location of electric service at the house , Reason: thats where power and ground is at. If your house is like that then run the coax from the antenna on the outside of the house along with the ground wire to the location of electric power and ground and have the grounding block there. Some houses have the prewire coaxes pulled to a location inside of the house and a coax/s go from that location to the location of electric power and ground.