First I use the app Dish Align to find the general direction I need to point the dish.
Preferred set up option - set up the dish next to the rig where I can see the TV screen through an open window. Quick and easy
For those times when I have to set up away from the rig, I use FaceTime. I connect my computer to the net using my phones hot spot. I set up the computer where it can see the TV screen.
I then set up a Face Time connection between my computer and phone.
I can now see the signal strength bars and adjust the dish for maximum signal strength.