Google maps has a neet Appl. for this. You just insert your house number and zip code, it finds your house and draws a line from your house in the correct direction of the Azimuth for you. You pick the Sat you are looking for. You zoom in on your house to see the dish, stand behind it and point, it gets you really close. See it (free) at
Satellite Finder / Dish Pointing Calculator with Google Maps | DishPointer.com