On our previous 5er my solution wasn't quite as elaborate as BB_TX but similar. I manufactured two pieces of Oak into an "L" shape and mounted that to the floor of the recessed TV area. Then I mounted a swing-arm TV bracket to the "L" shape. To secure the TV for travel I got a couple expanding curtain rods that I placed horizontally in front of the TV and the pressure from expanding them kept them, and the TV, in place. DW is handy with sewing and made a cover for the TV to keep it from getting marred by the curtain rods. Hope this helps.