oh i can help you............use a black corregated drainage pipe!!..............i also take a bag of ice and put in the pipe and tape up the holes i dont want fog to go out of and set up 2 foggers at each end and run it, you can put in the bushes or top of a hill to flow down...........its a great effect, EASY EASY!! putting the ice in the tube is also a neat thing to help cool it more, just jiggle it around to spread it out. then if thats not the spread effect you like use a pvc and drill holes in it or go buy a flex tubing and drill also........wind will control your fog no matter what you try if its breezy.