There is another nice beacontactic. You need a hotwire. Place the beacon at building X, then run to building Y and place all your C4 on the MCT. There is no way the team in an open game will be organized enough to save both buildings - they will have to choose.Another variation to this is using a stealth tank and a beacon when Nod. Sneak behind a the GDI tiberium refinery and place the beacon when noone sees you, then get back into the tank and quickly go behind another building and start firing away at it. Again, the defending team has to choose which building to defend.