I'm in a semi-rural area, so:
---buildings: none
--- trees: yes, in the area but my house is on a mostly open 4-acre lot, clear view to most of the sky.
---hills: none to the south, small incline to the north
---mountains: no
I'm a big Netflix fan, which is how I survive w/o cable or satellite!
OK , I am going to guess you need the most " powerful " antenna you can buy , without going so far as to look like a NASA ground station .
As I said , maybe 2 antennas & forget the rotor ? Think there is another thread on this forum about combining signals , might check it .
Also , plan on maintaince , sooner or later the sunlight will get the better of either the coax or some of the plastic insulators on the antenna .
Figure out how high you can get the antenna & still be practical .
Figure out the path for the coax or coaxes . Buy GOOD coax .
You may need a pre-amp , but I know next to nothing about them .
When it comes time to aim the antennas , either temporiarly locate a TV outside or scrounge up some walkey talkeys to communicate between you at the antenna and your partner at the TV , inside the house .
If none of this yealds satisfactory picture , you might go to the FTA forum and consider that route . There are a few HD channels broadcast in the clear . And several standard definition " local " channels in the clear . Ans some sports feeds in the clear .
Wyr