I have Dish Network and the plate is attached to a rubber pad that is about 18" x 18" about 3" thick that is really heavy, costs $50. I can always beat the guys with the tripod setups, I am having a beer watching TV before they even get a good start and the wind does not affect it due to its weight.
I get the local ZIp code and Dish tells me onscreen what the angles are.
I set the up and down to the correct degree, take my 2 way little level and level the rubber pad, stand behind it with my compass and check to see if there are any obstructions, move it close to the right degree South and then have the wife watch the screen, I slowly rotate the plate a little at a time to the right (I always start short of the prescribed degrees) and when she says it is ok, I stop.
This method is basically fool proof, if you have the right up and down angle and you are level at the base, you have a clear view in the right direction it is impossible not to get a signal in this manner, by slowly rotating the Dish even if you did not know the correct degree South you would find the signal by merely rotating it around, 360 degrees if need be but you would come across the signal on the way.
It usually takes me less than 5 minutes total from the time the dish comes outta the back of the truck, in the lower 48 Dish has a very strong signal and you don't have to be right on to get adequate TV
Hope this helps
Hunter1