Looks good! I'm using a 4" pipe this year, too, but I filled the pipe with frozen bottles of water to keep the fog on the ground. Worked real well in the test run.
Video of Fog test with 4" pipe - Photobucket - Video and Image Hosting
I plan to run the pipe down the center of the graveyard and cover it with leaves.
Video of Fog test with 4" pipe - Photobucket - Video and Image Hosting
I plan to run the pipe down the center of the graveyard and cover it with leaves.