Here are some Pics of our 2009 yard haunt.
Notice the younger, hipper death symbol... Kenny from SouthPark. The awesome graveyard fog is produced with Froggy's Freezin fog juice, an Antari Z-1200 rocking at 75% volume {yes almost FULL volume}. The Reverse Flow Coffin Fog Chiller is a Fog system that cant go wrong..... worst case scenario, ambient temp too cold and/or windy... you still have a smoking coffin. And its easier to hide than Igloo Coolers or Garbage cans.
And a video of the awesome fog.
Tutorial, walk around, inner workings of Reverse Flow Coffin Fog Chiller