Maybe. That's what I'm hoping the technician will tell me next week. The big trees are within about 20-30 feet of the house, so there is a clear sight-line in the northwest and southwest corners of the back yard, but I'm worried that they might be too far from the house, and also I don't know where the coax cables would go... would they bury them?
I am in a similar situation. There is only one spot on my entire property where i could get a clean shot at 119 and 110. That spot happens to be almost dead center of my front yard.
So I pole mounted my dish and planted hollies and leyland cypress (?? both evergreen) around it so it isn't visible from the street.
For 3 years I had cheap rg6 buried about 2 inches in the ground from the dish to the house. I finally had a chance to dig a proper trench and put quality rg6 in conduit, but there is no reason you cant bury it.