I love it and this is something I will be doing soon.
Valkman for further detail there was "caulk" pushed around each of the christmas tree's right where they exit the mounting plate. I would take a small dab of this stuff and work it into a cone tapered down.
Furthermore in the trunk area right where the tail light housing meets the floor there was some more of this stuff. I recommend replacing it. On my car it just fell off. May not be a bad idea to use around the antenna inlet either.