I know there are a lot members on here with large Yagi style antennas, but there is seldom any discussion on what turns these sky hooks. I am considering a new one for medium duty 12- 15 sq. windload for stacked antennas wondering what others are using? especially people using computer controlled systems. I have been looking at a yaesu 800dxa with a idiompress card. Anyone else using such a set up?