After hours spent/lost trying to aim my portable dish years ago we got a roof mounted unit that finds the satellites automatically. Thought we had it made until we discovered trees.
Now we still have the dome unit but have added a Winegard G2 portable unit, we can locate within 50 feet of the receiver, that finds the satellites automatically. No more frustration....again.
I'm not trying to sell the G2 but would encourage you go get a unit that searches for the satellites; unless you are better than I was at doing it manually.