We had one but never hooked it up and finally returned it. But I sat talking with a guy in a campground one day while he was hooking his up.
He had this little device he said he bought for $29 at Camping World that gave off this high-pitched humming sound. As the signal grew stronger, the sound would get louder. When he was locked on full strength, the signal became very loud and he knew he could tighten, stake..etc the set up down at that location.
We move to much to go through the hassle of setting it up ever day, but after watching many others struggle with their dishes, if we were to ever going to hook one up, I'd pay the few extra bucks, and get the InMotion set-up. You dont have to pay the big bucks and get the one that always stays locked on, but for only a few hundred, you can get one that will find the signal automatically and it's mounted tot he top fo the rig. Only problem is, you have to make sure you have a clear view of the Southern Sky.