If you bring up Google Maps on top of your house, you can click on the little box in the lower left and change to satellite mode. Zoom to the spot on your house lot where you want to put the dish. RIGHT-click
that exact spot on your lawn.
A menu will pop up, click on "What's Here?" and you will see the exact map coordinates of that exact spot! Copy/paste those into the Dishpointer "Your Location" box. In the Dishpointer "All Satellites" box, select the various sats you plan on wanting to see. Hit the SEARCH button, and it'll bring up your map and a green arrow pointing to that exact satellite. You can zoom in or out, and if need be, move the pointer on your yard to find the best spot before digging.
Don't plant a dish first, and find out you need a chainsaw later. Been there, done that, wished I'd had Dishpointer a LONG time ago!
Try 30W and then 87W and then 135W to give you an idea of how good your placement WAG is for your picked spot.
Go to
DishPointer - Align your satellite dish .